Meet your personal quilt math assistant
20+ quilting calculators and charts for easy,
accurate, and efficient quilting
START YOUR FREE TRIAL!
Be confident in your calculations
Stop guesstimating your fabric requirements. Avoid costly mistakes with precise, expert-verified formulas.
Simplify your quilting process
No more juggling between different tools and websites. With Quilt Geek, all the calculators and charts you need are in one place.
Plan ahead and save time
Do the math now and access your saved results whenever you need them—perfect for planning projects or shopping for fabric!
Design quilt tops. Bring your ideas to life.
Plan the layout of your quilt with our quilt design calculators. Calculate borders and sashing, and plan the size of your quilt based on the size of blocks you are using.
Plan your blocks. Without a hitch.
Express your creativity with quilt blocks of any size. Calculate the starting squares required to make any basic quilting block – in any dimension.
IS QUILT GEEK FOR ME?
YES! Quilt Geek is for you if you’re a
Beginner
Quilter
Quilt Geek is the friend you need when you’re just starting out and you’re confused about the basic calculations that you can’t avoid (even if you wanted to).
Advanced Quilter
If you’re looking for a reliable source for whenever you’re doing quilt math on your own, Quilt Geek is what you need. Be confident you’re getting the right numbers when you’re designing your own quilt patterns, resizing existing patterns, etc.
Pattern Designer
Quilt Geek provides tried-and-tested methods and calculations for blocks and other design elements, as well as all the quilt math required to put together a comprehensive pattern for your customers.
Fabric Shop Owner
Yardage conversions, quilt kitting, fabric-saving cutting, precuts to size gauge… With Quilt Geek you’ll be confident you’re offering your customers exactly what they need. Meaning they’ll keep coming back to you!
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TRY IT FOR FREE!
Finish your quilts. Effortlessly.
Plug in the dimensions of your quilt and let the app do the rest. Backing, batting, and binding all calculated for you with a click of a button.
Save calculations. Access any time.
Minimize the time spent calculating. Calculate ahead and access saved calculations when you’re ready to use them.
WE’RE BARBARA AND ULA
and we created Quilt Geek for you!
We are the creators and designers behind the popular quilting blog Designed to Quilt. And we know exactly how frustrating quilt math can be.
When we first started quilting, we had to figure it out all on our own. With the overwhelm of creating the first few quilts, quilt math was the last thing we wanted to deal with! Later, we started writing patterns, which opened up a whole new world of quilt calculations we had to master. We just knew there had to be a better way!
We decided to create a tool that provides reliable, tried-and-tested calculations for quilters of all levels. And we are beyond excited about what Quilt Geek brings to the quilting community! It is a game changer in your quilting process and you’ll soon be wondering how you could ever live without it.
We want you to get lost in quilting, not in math!
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All prices are in USD. Depending on your location VAT and other taxes may be applicable (the final price is calculated in the app store).
WHY QUILTERS LIKE YOU
LOVE Quilt Geek
The tools within this app are amazing. I love the math accuracy and options on determining block size “finished” or “unfinished”. I’ve used the Quilt Top borders calculator (mitered & non) that provides the strips to cut & yardage amount; the half sq and flying geese calculations are extremely accurate with simple cutting methods. This app is full of any possible scenario a quilter might encounter.
Paplv
in the Apple App Store
Quilt Geek is absolutely worth the wait!! In my opinion, it’s the best quilt calculator app ‘out there’. Every quilter should have this tool.
Carole
in the Google Play Store
I am converted! I am never doing quilt math without this app again. I love the little pictures it provides for backing. And I really like the quilt block calculators. I’ll play with it some more, but you really did an amazing job!
Pam S.
See Quilt Geek in action
Click on each calculator to see how it works
Quilt Finishing Calculators
Binding Calculator
Calculates how much fabric you need for binding your quilt.
How to use the Binding calculator?
The Binding calculator calculates the yardage required to make straight grain binding strips.
EXAMPLE
Let’s say we need binding for a 70×90” quilt. We want our binding strip be 2 ¼” wide with a 10” overage.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
BINDING STRIP WIDTH (2.25)
Width of the binding strip before you iron and sew it on your project.
QUILT WIDTH (70)
Horizontal dimension of the quilt top.
QUILT LENGTH (90)
Vertical dimension of the quilt top.
WIDTH OF FABRIC (WOF) (42)
Width of the fabric you are using, measured from one selvage edge to the other. If you don’t enter any number, the calculator will use the default WOF. To set the default WOF go to Settings.
BINDING OVERAGE (10)
Extra length of binding strip needed to attach the binding to the quilt.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek provides results for:
TOTAL BINDING STRIP LENGTH (330)
Length of binding you need for your quilt, including the overage you entered.
WIDTH OF WOF STRIPS TO CUT (2 ¼)
Width of strips you need to cut from your fabric (= binding strip width).
NUMBER OF WOF STRIPS TO CUT (9)
Number of strips you need to cut from your fabric to get the required binding strip length.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
* ASSUMPTIONS
The calculator automatically adds the seam allowance required to join the strips with diagonal seams.
Backing & Batting Calculator
Calculates backing for both vertical and horizontal piecing.
How to use the Backing & Batting calculator?
The Backing & Batting calculator calculates the required yardage for backing (it can also be used for batting). It provides two calculations: one for vertical piecing and one for horizontal piecing. If the direction of the fabric you are using as your backing is irrelevant, choose the orientation that uses the least yardage. If you want the print to run in a specific direction, choose the fabric placement accordingly.
Please note that the illustrated piecing diagram is provided only for standard WOFs and quilt sizes. The diagram should only be used as a visualization of the piecing layout – it illustrates the number and orientation of the backing pieces, however, it does not illustrate your actual values (quilt width/length). If you are using very narrow WOF (less than 36″) or making very large quilts (larger than 120″) the piecing diagram might not be provided.
This calculator assumes the piecing seams only run vertically or horizontally, which can produce some fabric waste. If you’re looking to use the least amount of fabric possible, use the Fabric Saving Backing Calculator.
EXAMPLE
Let’s say we need backing for our large throw quilt 70×90”. We’re using fabric with 42” WOF and want a 4” overage on every side.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
QUILT WIDTH (70)
Horizontal dimension of the quilt top.
QUILT LENGTH (90)
Vertical dimension of the quilt top.
WIDTH OF FABRIC (WOF) (42)
Width of the fabric you are using, measured from one selvage edge to the other. If you don’t enter any number, the calculator will use the default WOF. To set the default WOF go to Settings.
OVERAGE (4)
The amount of fabric that hangs over the edge on each edge. Overage is necessary for long-arm quilting to attach the quilt to the frame, so consult your long-armer about the required overage. Even if you plan to quilt on your domestic machine or by hand, some overage is required to account for the shifting of the quilt sandwich layers as you quilt.
Click CALCULATE.
Quilt Geek does the math for you for VERTICAL PIECING and HORIZONTAL PIECING with illustrated diagrams. Click on tab to get the chosen calculation.
Step 2: GET RESULTS
Quilt Geek provides results for both piecing directions for:
CUT (2x 98)
The number and size of pieces you need to cut from your fabric.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
The results show that vertical piecing requires less fabric, so for our sample quilt, we will choose the optimal option—vertical piecing.
* ASSUMPTIONS
The calculator automatically adds a ½ inch seam allowance for sewing the backing/batting pieces.
Fabric-Saving Backing Calculator
Calculates how to piece your quilt backing to save fabric!
How to use the Fabric-Saving calculator?
The Fabric-Saving Backing calculator calculates the least wasteful way to piece quilt backing. The calculator suggests the optimal piecing layout and calculates the required yardage. It also provides cutting instructions for all the required backing pieces.
It provides two calculations: one for vertical piecing and one for horizontal piecing. If the direction of the fabric you are using as your backing is irrelevant, choose the orientation that uses the least yardage. If you want the print to run in a specific direction, choose the fabric placement accordingly.
For usability, the calculator calculates the layout for up to 3 short backing piecing seams. Consequently, you might get some leftover fabric after subcutting the WOF strip into the small backing pieces.
Please note that the illustrated piecing diagram is provided only for standard WOFs and quilt sizes. The diagram should only be used as a visualization of the piecing layout – it illustrates the number and orientation of the large WOF pieces, as well as the number and orientation of the smaller backing pieces. However, it does not illustrate your actual values (quilt width/length). If you are using very narrow WOF (less than 36″) or making very large quilts (larger than 120″) the piecing diagram might not be provided.
This calculator assumes you want to waste as little fabric as possible, which means there is some additional piecing involved (compared to basic backing piecing). If you’re looking to have the fewest backing seams possible, use the Backing & Batting calculator.
EXAMPLE
Let’s say we need backing for our large throw quilt 75×90”. We’re using fabric with 42” WOF and want a 4” overage on every side.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
QUILT WIDTH (75)
Horizontal dimension of the quilt top.
QUILT LENGTH (90)
Vertical dimension of the quilt top.
WIDTH OF FABRIC (WOF) (42)
Width of the fabric you are using, measured from one selvage edge to the other. If you don’t enter any number, the calculator will use the default WOF. To set the default WOF go to Settings.
OVERAGE (4)
The amount of fabric that hangs over the edge on each edge. Overage is necessary for long-arm quilting to attach the quilt to the frame, so consult your long-armer about the required overage. Even if you plan to quilt on your domestic machine or by hand, some overage is required to account for the shifting of the quilt sandwich layers as you quilt.
Click CALCULATE.
Quilt Geek calculates the most optimal way to piece the backing using as little yardage as possible. Calculations are for both, for VERTICAL PIECING and HORIZONTAL PIECING with illustrated diagrams. Click on tab to get the chosen calculation.
Step 2: GET RESULTS
Quilt Geek provides results for both piecing directions for:
CUT (2x WOF x 83, 1x WOF x 42)
The number and size of pieces you need to cut from your fabric.
SUBCUT TO (2x WOF x 16 ½)
The number and size of pieces you need to subcut from the previously defined piece.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
The results show that horizontal piecing requires less fabric, so for our sample quilt, we will choose the optimal option—horizontal piecing.
* ASSUMPTIONS
The calculator automatically adds a ½ inch seam allowance for sewing the backing/batting pieces.
Bias Binding Calculator
Calculates the starting square required to make bias binding.
How to use the Bias Binding calculator?
The Bias Binding calculator calculates the starting square size required to make bias binding strips using the continuous bias binding or regular binding strip method.
EXAMPLE
Let’s say we need for our quilt 220″ of binding and we want it to be 2 ¼” wide.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
BINDING STRIP WIDTH (2.25)
Width of the binding strip before you iron and sew it on your project.
REQUIRED LENGTH OF BINDING STRIP (220)
Total length of binding you need for your project including overage, if required.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek provides results for:
STARTING SQUARE SIZE (24×24)
Size of the starting square of fabric you need to cut the bias binding of the required length and width.
* ASSUMPTIONS
The calculator automatically adds ¼ inch seam allowance required to join the strips. Additionally, it adds some margin to ensure adequate binding length.
Quilt Top Calculators
Borders Calculator
Calculates up to 5 borders – for both mitered and non-mitered corner layout.
How to use the Border calculator?
The Border calculator calculates the required fabric yardage for quilt borders for both mitered corners and non-mitered corners.
It allows you to add up to 5 borders to the quilt. Border 1 is the innermost border on the quilt.
EXAMPLE
Let’s say we have a 70×90” quilt and we want to add two borders with mitered corners. Border 1 will be 8″ wide and Border 2 will be 5″ wide. We’re using fabric with a 42” WOF (width of fabric).
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
BORDER 1 FINISHED WIDTH (8)
Width of the border measured on the finished quilt top (without seam allowances).
BORDER 2 FINISHED WIDTH (5)
Click ‘Add more borders’ and type the width of the second border.
QUILT WIDTH (70)
Finished horizontal dimension of the quilt top (before adding the borders).
QUILT LENGTH (90)
Finished vertical dimension of the quilt top (before adding the borders).
WIDTH OF FABRIC (WOF) (42)
Width of the fabric you are using, measured from one selvage edge to the other. If you don’t enter any number, the calculator will use the default WOF. To set the default WOF go to Settings.
Click CALCULATE.
Quilt Geek provides results for MITERED CORNERS and NON-MITERED CORNERS. Click on the tab to get the chosen calculation.
Step 2: GET RESULTS
Our quilt will have mitered borders, so we choose mitered corners tab and get the results for:
WIDTH OF WOF STRIPS TO CUT (Border 1: 8 ½, Border 2: 5 ½)
Width of strips you need to cut from your fabric (= unfinished border width).
NUMBER OF WOF STRIPS TO CUT (Border 1: 13, Border 2: 13)
Number of strips you need to cut from your fabric.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
* ASSUMPTIONS
The calculator automatically adds the seam allowance required to join the strips with diagonal seams.
Sashing Calculator
Calculates sashing fabric with options to add cornerstones, sashing borders (or both).
How to use the Sashing calculator?
The Sashing calculator calculates the required yardage to make sashing using strips cut along the width of fabric (WOF). It allows you to add cornerstones and sashing borders.
See the diagram below for an explanation of the layout elements. Quilt Geek will also provide an illustrated diagram based on the options you select.
SASHING (orange color)
Strips placed horizontally and vertically among quilt blocks.
SASHING BORDERS (blue color)
Sashing strips placed around the quilt layout (along the edges of the finished quilt top).
INNER CORNERSTONES (yellow color)
Small contrasting squares in the sashing at the corners of the blocks.
OUTER CORNERSTONES (pink color)
Small contrasting squares in the sashing borders at the corners of the blocks.
EXAMPLE
Let’s say we have 14 x 14″ finished blocks and we want to create a layout with blocks arranged in 3 rows and 3 columns. We want to add sashing that has a 4″ finished width, sashing borders and inner cornerstones. We’re using fabric with a 42” WOF (width of fabric) for sashing.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
FINISHED WIDTH OF BLOCKS (14)
Width (horizontal dimension) of the blocks you are using measured on the finished quilt top (without seam allowances).
FINISHED HEIGHT OF BLOCKS (14)
Height (vertical dimension) of the blocks you are using measured on the finished quilt top (without seam allowances).
NUMBER OF ROWS OF BLOCKS (3)
Number of rows in your quilt layout – How many blocks are there down the quilt?
NUMBER OF COLUMNS OF BLOCKS (3)
Number of columns in your quilt layout – How many blocks are there across the quilt?
WIDTH OF FABRIC (WOF) FOR SASHING
(42)
Width of the fabric you are using, measured from one selvage edge to the other.
Step 2: CHOOSE DESIRED LAYOUT
There are different options for the layout of your sashing. Choose the desired layout for your sashing, and Quilt Geek will provide you with an illustrated diagram of the chosen options.
In our sample quilt, we have sashing borders (YES) with inner cornerstones (YES) and without outer cornerstones (NO).
Click CALCULATE.
Step 3: GET RESULTS
Quilt Geek provides a list of all the important numbers you need to make your sashing.
YOUR QUILT:
NUMBER OF BLOCKS (9)
Total number of blocks in your quilt layout.
FINISHED QUILT WIDTH (58)
Finished width of the quilt top including the sashing.
FINISHED QUILT LENGTH (58)
Finished length of the quilt top including the sashing.
SASHING:
TOTAL SASHING LENGTH (451 ½)
Total length of strips required for the sashing.
WIDTH OF WOF STRIPS TO CUT (4 ½)
Width of strips you need to cut from your fabric for sashing (= unfinished sashing width).
NUMBER OF WOF STRIPS TO CUT (11)
Number of strips you need to cut from your fabric for sashing.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
CORNERSTONES:
NUMBER OF CORNERSTONES (4)
Total number of cornerstones in your quilt layout.
WIDTH OF WOF STRIPS TO CUT (4 ½)
Width of strips you need to cut from your fabric for cornerstones (= unfinished cornerstone width).
NUMBER OF WOF STRIPS TO CUT (1)
Number of strips you need to cut from your fabric for cornerstones.
* ASSUMPTIONS
The calculator automatically adds the seam allowance required to join the sashing strips with diagonal seams.
Blocks to Quilt Size Calculator
Calculates how many blocks you need for the desired quilt size.
How to use the Blocks to quilt size calculator?
The Block to quilt size calculator converts the dimensions of the blocks you are using into standard quilt sizes. It calculates the exact finished size of the quilt, the block layout (number of columns and rows) and total number of blocks required to make the desired quilt size based on your block dimensions.
EXAMPLE
Let’s say we have 7 x 9″ quilt blocks and want to know how many blocks we need to make a throw size quilt.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
FINISHED WIDTH OF BLOCKS (7)
Width (horizontal dimension) of the blocks you are using measured on the finished quilt top (without seam allowances).
FINISHED HEIGHT OF BLOCKS (9)
Height (vertical dimension) of the blocks you are using measured on the finished quilt top (without seam allowances).
Click CALCULATE.
Step 2: GET RESULTS
You’ll get all the math done for 9 standard quilt sizes. Quilt Geek does all the work for you by giving you the layout (number of columns and blocks) that will fit the desired quilt size and the size of your quilt blocks.
For the throw size (56 x 72) we need 64 blocks, arranged in 8 columns and 8 rows.
T-Shirt Calculator
Does all the quilt math required to plan a T-Shirt quilt.
How to use the T-Shirt calculator?
The T-Shirt Quilt calculator calculates the layout of your T-Shirt quilt based on the dimensions of T-shirt blocks you’re using, the desired quilt size, and the desired sashing. If required, it will also calculate sashing borders and cornerstones.
See the diagram below for an explanation of the layout elements. Quilt Geek will also provide an illustrated diagram based on the options you select.
T-SHIRT QUILT BLOCKS (pale color)
Quilt blocks cut from your T-shirts.
SASHING (orange color)
Strips placed horizontally and vertically among quilt blocks.
SASHING BORDERS (blue color)
Sashing strips placed around the quilt layout (along the edges of the finished quilt top).
INNER CORNERSTONES (yellow color)
Small contrasting squares in the sashing at the corners of the blocks.
OUTER CORNERSTONES (pink color)
Small contrasting squares in the sashing borders at the corners of the blocks.
The math behind a T-shirt quilt is pretty much the same as the math for any block-based quilt. Just that instead of quilt blocks, you’ll be using pieces of fabric cut out from your favorite T-shirts. The first thing you’ll need to do is gather the T-shirts that you want to use and measure what size your T-shirt blocks can be. Usually, you want to go as large as possible to make use of that fabric.
EXAMPLE
Let’s say we’re using men’s XL T-shirts and we can cut out blocks measuring 14.5 x 14.5”. This means we’ll get 14 x 14” FINISHED blocks. We want to add 4” (finished) sashing between the blocks and sashing border. We’re aiming for a lap-size quilt.
Step 1: ENTER BLOCK SIZE
Enter the numbers into the calculator. Numbers from the example are written in (parentheses).
UNFINISHED WIDTH OF T-SHIRT BLOCKS (14.5)
Width (horizontal dimension) of the T-shirt blocks you are using measured before they are sewn in the quilt top (the width of units you cut from the T-shirts).
UNFINISHED HEIGHT OF T-SHIRT BLOCKS (14.5)
Height (vertical dimension) of the T-shirt blocks you are using measured before they are sewn in the quilt top (the height of units you cut from the T-shirts).
Step 2: CHOOSE DESIRED LAYOUT AND SIZE
There are various layout options for your T-shirt quilt. Select your desired layout, and Quilt Geek will provide an illustrated diagram based on your choices.
If you want to add sashing, keep YES selected and enter the numbers. If you prefer to make a T-shirt quilt without sashing, select NO, and the other options will close.
EXAMPLE
In our sample quilt, we want to add 4″ finished sashing and are using a 42″ WOF. We would like to have sashing borders (YES), without inner cornerstones (NO), and without outer cornerstones (NO). We’re aiming for lap size quilt.
FINISHED SASHING WIDTH (4)
Width of the sashing measured on the finished quilt top (without seam allowances).
WIDTH OF FABRIC (WOF) FOR SASHING (42)
Width of the fabric you are using, measured from one selvage edge to the other.
APPROXIMATE QUILT SIZE (LAP SIZE)
Approximate size of the quilt you want to make. The calculator uses standard quilt sizes – see assumptions.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek provides a list of all the important numbers you need to make your T-shirt quilt.
YOUR QUILT:
NUMBER OF T-SHIRT BLOCKS (6)
Total number of T-shirt blocks in your quilt layout.
NUMBER OF COLUMNS OF BLOCKS (2)
Number of columns in your quilt layout – How many blocks are there across the quilt?
NUMBER OF ROWS OF BLOCKS (3)
Number of rows in your quilt layout – How many blocks are there down the quilt?
FINISHED QUILT WIDTH (40)
Finished width of the quilt top including the sashing.
FINISHED QUILT LENGTH (58)
Finished length of the quilt top including the sashing.
SASHING:
TOTAL SASHING LENGTH (339)
Total length of strips required for the sashing.
NUMBER OF CORNERSTONES (not used in our sample quilt)
Total number of cornerstones in your quilt layout.
WIDTH OF WOF STRIPS TO CUT (4 ½)
Width of strips you need to cut from your fabric for sashing/cornerstones (= unfinished sashing/cornerstone width).
NUMBER OF WOF STRIPS TO CUT (9)
Number of strips you need to cut from your fabric for sashing/cornerstones.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
* ASSUMPTIONS
The calculator automatically adds the seam allowance required to join the sashing strips with diagonal seams. The calculator uses standard quilt sizes found in the Standard Quilt Size Chart as a reference.
Precuts to Size Gauge Calculator
Gauges the number of precuts required to make the desired size quilt.
How to use the Precuts to size gauge calculator?
The Precuts to size gauge calculator gauges the number of precut fabric pieces required to make different standard size quilts.
IMPORTANT! The results of this calculator are an estimation. The actual size of quilt you can make form a certain number of precut pieces depends heavily on the design of the quilt top. More complex designs will eat up more fabric for seam allowances. A minimum seam allowance is added to the calculation depending on the starting fabric size (see assumptions below), but more seam allowance may be needed for more intricate designs.
EXAMPLE
Let’s say you want to know how many jelly roll pieces you need to make a lap size quilt.
Step 1: ENTER YOUR NUMBERS
Choose the precut size or enter the size of your fabric piece. The example is written in (parentheses).
STARTING FABRIC SIZE (JELLY ROLL)
The size of pieces you are using for your quilt. Choose a precut dimension or enter the width and height of your precut pieces.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek provides a list of minimal required number of pieces for all 9 standard quilt sizes.
For lap size quilt we need minimum of 30 jelly roll pieces (42 x 2.5″).
* ASSUMPTIONS
The calculator assumes the following seam allowances:
– 0.5″ for pieces up to 5″
– 1″ for pieces up to 10″
– 2″ for pieces up to 20″
– 3″ for larger pieces
The calculator uses standard quilt sizes found in the Standard Quilt Size Chart as a reference. The calculator assumes the following precut sizes: 2.5×2.5″ (mini charm), 5×5″ (charm), 10×10″ (layer cake), 21×9″ (fat eight), 21×18″ (fat quarter), 42×2.5″ (jelly roll), 42×9″ (quarter yard), 42×18″ (half yard), 42×36″ (full yard).
Quilt Block Calculators
Half-Square Triangle Calculator
Does all the HST math for you based on one single input number!
How to use the Half Square Triangles calculator?
The Half Square Triangles calculator calculates the block dimensions and the required starting pieces based on one single value.
Enter a value in ANY of the input fields and press calculate. The calculator will output all the remaining values.
EXAMPLE
Let’s say, we want to make half-square triangles that are 5″ finished.
Step 1: ENTER YOUR NUMBERS
Enter a value in ANY of the input fields. The example is written in (parentheses).
UNFINISHED BLOCK DIMENSIONS
The dimensions of the block measured before it is sewn in the quilt top (includes seam allowances).
FINISHED BLOCK DIMENSIONS (5)
The dimensions of the block measured on the finished quilt top (without seam allowances).
STARTING PIECES DIMENSIONS
The dimensions of the pieces you need to cut from fabric to make the blocks following the specified method.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek returns all the required values to make half-square triangle blocks: unfinished and finished dimensions, starting pieces dimensions for three different construction methods (2-at-a-time, 4-at-a-time, 8-at-a-time).
* ASSUMPTIONS
The calculator assumes seam allowances are ¼ inch.
Quarter Square Triangle Calculator
Does all the QST math for you based on one single input number!
How to use the Quarter Square Triangles calculator?
The Quarter Square Triangles calculator calculator calculates the block dimensions and the required starting pieces based on one single value.
Enter a value in ANY of the input fields and press calculate. The calculator will output all the remaining values.
EXAMPLE
Let’s say, we want to make quarter-square triangles that are 5″ finished.
Step 1: ENTER YOUR NUMBERS
Enter a value in ANY of the input fields. The example is written in (parentheses).
UNFINISHED BLOCK DIMENSIONS
The dimensions of the block measured before it is sewn in the quilt top (includes seam allowances).
FINISHED BLOCK DIMENSIONS (5)
The dimensions of the block measured on the finished quilt top (without seam allowances).
STARTING PIECES DIMENSIONS
The dimensions of the pieces you need to cut from fabric to make the blocks following the specified method.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek returns all the required values to make half-square triangle blocks: unfinished and finished dimensions and starting pieces dimensions.
* ASSUMPTIONS
The calculator assumes seam allowances are ¼ inch.
Flying Geese Calculator
Does all the flying geese math for you based on one single input number!
How to use the Flying Geese calculator?
The Flying Geese calculator calculates the block dimensions and the required starting pieces based on one single value.
Enter a value in ANY of the input fields and press calculate. The calculator will output all the remaining values.
EXAMPLE
Let’s say, you want to make flying geese that are 8 x 4″ finished.
Step 1: ENTER YOUR NUMBERS
Enter a value in ANY of the input fields. The example is written in (parentheses).
UNFINISHED BLOCK DIMENSIONS
The dimensions of the block measured before it is sewn in the quilt top (includes seam allowances).
FINISHED BLOCK DIMENSIONS (8)
The dimensions of the block measured on the finished quilt top (without seam allowances).
STARTING PIECES DIMENSIONS
The dimensions of the pieces you need to cut from fabric to make the blocks following the specified method.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek returns all the required values to make flying geese blocks: unfinished and finished dimensions, starting pieces dimensions for two different construction methods (1-at-a-time and 4-at-a-time).
* ASSUMPTIONS
The calculator assumes seam allowances are ¼ inch.
Yardage Calculators
Fabric-Saving Cutting Calculator
Calculates the minimum amount of fabric you need for any number and size fabric pieces.
How to use the Fabric-Saving Cutting calculator?
The Fabric-Saving Cutting calculator calculates the minimum amount of fabric yardage required to cut the desired fabric pieces.
It provides two calculations:
– DIRECTIONAL FABRIC: assumes you are using directional fabric and places the pieces on the fabric without rotating them (width of the pieces runs along the width of fabric)
– NON-DIRECITONAL FABRIC: assumes you are using non-directional fabric and rotates the pieces in order to use the least amount of fabric possible
It also provides a possible cutting diagram for the desired fabric pieces. Note that the diagram does not represent the only possible arrangement of the pieces – you might prefer to arrange the pieces differently based on your cutting preferences.
The pieces are color coded, i.e. the pieces defined in the yellow fields are illustrated as yellow pieces in the diagram.
EXAMPLE
Let’s say we need the following pieces cut from the same fabric:
(2) 6 x 5”
(4) 10 x 8”
(6) 5 x 12”
We’re using non-directional fabric with a 42” WOF (width of fabric).
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator.
NUMBER OF PIECES
The required number of pieces of the specified size.
WIDTH IN INCHES
The width of the required piece(s).
HEIGHT IN INCHES
The height of the required piece(s).
WIDTH OF FABRIC (WOF)
Width of the fabric you are using, measured from one selvage edge to the other. If you don’t enter any number, the calculator will use the default WOF. To set the default WOF go to Settings.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek does the math for you for DIRECTIONAL FABRIC and NON-DIRECTIONAL FABRIC. Click on tab to get the chosen calculation. This way you can easily compare the two and decide which option works better.
TOTAL YARDAGE (& METERAGE)
Fabric requirements are in inches and in yards (and in meters, if meterage is turned on in Settings). Values in inches are rounded up to the nearest ⅛ (0.125) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in meters are rounded up to two decimal places.
In our example, we’re not using a directional fabric. We will use the non-directional cutting scheme.
Pieces from Fabric Calculator
Calculates how many desired pieces you can cut from your fabric.
How to use the Pieces from Fabric calculator?
The Pieces from fabric calculator calculates the maximum number of desired size pieces you can cut from a given piece of fabric. You can either enter the dimensions of the fabric to cut from or choose a precut dimension.
It provides two calculations:
– DEFAULT PLACEMENT uses the same piece orientation as defined in your input fields
– FLIPPED PLACEMENT rotates the placement of pieces (reversing the width and length of piece size).
EXAMPLE
Let’s say we’re making flying geese and need 5 x 2.5” starting rectangles. We have perfect fat quarters we want to use. We want to know how many 5 x 2.5” rectangles you can get from one fat quarter.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator and/or choose precut size. Numbers from the example are written in (parentheses).
SIZE OF PIECES TO CUT (5 x 2.5)
Width and heigh of pieces you want to cut.
SIZE OF FABRIC TO CUT FROM (FAT QUARTER)
Width and heigh of the fabric piece you want to cut from. Enter the width and height or choose a precut dimension.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek does the math for you for DEFAULT placement and FLIPPED placement. Click on tab to get the chosen calculation. This way you can easily compare the two and decide which option works better.
In our example, we can see that the default placement gives us 24 rectangles.
The flipped placement (meaning the width and height of the required rectangles are now flipped) provides 28 rectangles.
We’re not using a directional fabric, so the flipped placement is our best way to go.
* ASSUMPTIONS
The calculator assumes the following precut sizes: 2.5 x 2.5″ (mini charm), 5 x 5″ (charm), 10 x 10″ (layer cake), 21 x 9″ (fat eight), 21 x 18″ (fat quarter), 42 x 2.5″ (jelly roll), 42 x 9″ (quarter yard), 42 x 18″ (half yard), 42 x 36″ (full yard).
Strips from Fabric Calculator
Calculates how many desired strips you can cut from your fabric.
How to use the Strips from Fabric calculator?
The Strips from Fabric calculator calculates the maximum number of desired width strips you can cut from a given piece of fabric. You can either enter the dimensions of the fabric to cut from or choose a precut dimension.
The calculator calculates two options:
– HORIZONTAL CUTTING assumes strips are cut along the width of the given piece of fabric
– VERTICAL CUTTING assumes strips are cut along the height of the given piece of fabric.
EXAMPLE
Let’s say we need 2.5″ strips. And we have ¼ yard of favorite fabric we want to use. We want to know how many 2.5” strips we can get from ¼ yard.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator and/or choose precut size. Numbers from the example are written in (parentheses).
WIDTH OF STRIPS TO CUT (2.5)
Width of strips you want to cut.
SIZE OF FABRIC TO CUT FROM (¼ yard)
Width and heigh of the fabric piece you want to cut from. Enter the width and height or choose a precut dimension.
Click CALCULATE.
Step 2: GET RESULTS
Quilt Geek does the math for you for HORIZONTAL an VERTICAL CUTTING. Click on tab to get the chosen calculation. This way you can easily compare the two and decide which option works better.
In our example, we can see that the horizontal cutting gives us max. 3x 2.5″ strips, each 42″ length.
The vertical cutting (meaning the cutting direction is now flipped) provides max. 16x 2.5″ strips, each 9″ length.
We’re looking for greater total length, so we will go with vertical cutting option.
* ASSUMPTIONS
The calculator assumes the following precut sizes: 2.5 x 2.5″ (mini charm), 5 x 5″ (charm), 10 x 10″ (layer cake), 21 x 9″ (fat eight), 21 x 18″ (fat quarter), 42 x 2.5″ (jelly roll), 42 x 9″ (quarter yard), 42 x 18″ (half yard), 42 x 36″ (full yard).
Unit Conversion Calculator
Converts between measurements in inches, decimal and fractional yards, meters, cms and mms.
How to use the Unit Conversion calculator?
The Unit Conversion calculator converts between measurements in inches, yards (decimal), yards (fractional), meters, centimeters, and millimeters.
Enter a value in ANY of the input field and press CALCULATE. The calculator will output all the remaining values.
EXAMPLE
Let’s say we want to convert 140 cm to inches.
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. The number from the example is written in (parentheses).
INCHES
Fabric measurement in inches.
YARDS – decimal
Fabric measurement in yards in decimal form.
YARDS -fractional
Fabric measurement in yards in fractional form.
CENTIMETERS (140)
Fabric measurement in centimeters.
Click CALCULATE.
Step 2: GET RESULTS
The calculator provides the conversion to all other units.
* ASSUMPTIONS
Values in inches are rounded up to the nearest ¼ (0.25) inch. Values in yards are rounded up to the nearest ⅛ (0.125) or ⅓ (0.333) yard. Values in centimeters are rounded up to the nearest 0.10 cm.
Quilt Kitting Calculator
Calculates how much fabric you need to make multiple quilt kits.
How to use the Quilt Kitting calculator?
The Quilt Kitting calculator calculates the fabric requirements for the required number of kits based on the fabric requirements for 1 quilt kit.
EXAMPLE
Let’s say we’d like to get fabric requirements for 5 kits, each kit includes 1 yard (label A), (4) charm precuts (label B), (3) fat eight precuts (label C).
Step 1: ENTER YOUR NUMBERS
Enter the numbers into the calculator. The number from the example is written in (parentheses).
YARDAGE LABEL (A)
Label of the fabric. If left empty, the default label will be applied.
YARDAGE INCHES or YARDS (1 yard)
The fabric requirement in inches and yards (for 1 quilt kit). Only enter one of the two values, the other value will be calculated automatically.
PRECUTS LABEL (B, C)
Label of the fabric. If left empty, the default label will be applied.
PRECUTS COUNT (4, 3)
The required number of precut pieces (for 1 quilt kit).
PRECUT SIZE (CHARM, FAT EIGHT)
The required precut size. Choose one option from the dropdown list.
NUMBER OF KITS REQUIRED (5)
The total number of required kits.
Click CALCULATE.
Step 2: GET RESULTS
The calculator provides the total number of fabrics you need.
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