• Quilting Calculators 1
  • Quilting Calculators 2
  • Quilting Calculators 3
  • Quilting Calculators 4

Quilting Calculators

Master the math involved in quilting! Robert Kaufman Fabrics and Quilters Paradise have joined forces to bring you this updated collection of eight essential quilting calculators. Designed by quilters, the calculators work with both U.S. and metric measurements. With these tools you’ll easily and accurately work out how many rectangular pieces can be cut from a larger piece, or how much fabric is needed for backing, batting and borders, square-in-a-square, set-in and corner triangles.
Fabric Measurement Converter: Converts between measurement in decimals and fractions.Backing and Batting Calculator: Determines how much yardage from a bolt of fabric is needed to make the backing for a quilt.Piece Count Calculator: Shows the number of fixed-size pieces that can be cut from a larger piece of fabric.Pieces to Yardage Area Calculator: Indicates how much fabric is needed in order to cut a given number of fixed-size pieces.Binding Calculator: Tells you the amount of fabric required to bind your quilt, based on the quilt’s dimensions and the binding strip width.

Border Calculator: Shows the amount of fabric required to create borders, based on your quilt’s dimensions and the width of the borders.

Square-in-a-Square Calculator: Works out all the key dimensions of a square-in-a-square block.

Set-in and Corner Triangle Calculator: Determines the size of the square piece you’ll need to cut in order to create both unfinished set-in triangles and unfinished corner triangles.Pieces to Yardage Area Calculator: Indicates how much fabric is needed in order to cut a given number of fixed-size pieces.Binding Calculator: Tells you the amount of fabric required to bind your quilt, based on the quilt’s dimensions and the binding strip width.

Border Calculator: Shows the amount of fabric required to create borders, based on your quilt’s dimensions and the width of the borders.

Square-in-a-Square Calculator: Works out all the key dimensions of a square-in-a-square block.

Set-in and Corner Triangle Calculator: Determines the size of the square piece you’ll need to cut in order to create both unfinished set-in triangles and unfinished corner triangles.

Category : Tools

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Reviews (27)

Kat. B. Jan 30, 2022     

I finally was able to download the app, network error! Can now say it looks really good. I haven't used it yet to calculate any measurements for a quilt but I've had a little play and can see how useful it will be. Very straightforward and easy to use, helpful explanations, just punch in your measurements and it gives the required amount of fabric needed, quick and easy. Thank you and well done 👏

Bar. R. Jun 29, 2020     

I use this app with every quilting project I do! I hate the math part of quilting, and this app does it for me with excellent results every time. Binding, borders, backing, etc...all calculated by the width and length of my quilt. Kudos!

Jet. H. Aug 20, 2020     

I tried using this for the first time today. I'm impressed. I always sat and tried to figure out fabric needs by hand. I'm very good at math and love doing it but it would still take so much time. This is just wonderful. I can take this to the store with me, if I find a fabric I like that is different width than what I did the math on i can just put it in so easy and it's fast to readjust the amount of fabric i need to make my quilt. THANK YOU!!!!!

Cha. K. Feb 8, 2019     

I use this app all the time. It's a great time saver for calculating fabric yardage. Thanks for correcting the binding calculator as it had stopped giving you the option of choosing what size binding you prefer.

Kat. E. May 25, 2019     

I have been using the RK app for at least 8 years. On the go , in the quilt shop or at home to find the amount needed for many projects, always accurate! I usually enlarge most quit patterns to my liking and this app helps me to calculate what I need to purchase.

Reb. F. Apr 23, 2019     

calculates yardage and pieces for piecework binding and backing. does not have provosion for layout or notes on individual projects. does not have social media connectivity. its a specialized calculator. plain and simple. Either Im super chintzy or its generous - but I have found its estimations to be generous and forgiving.

Jud. Z. Oct 21, 2019     

Love this app. When I am having brain farts it fills in the gaps and saves me so much time. No guessing how much binding or how many steps needed for borders. I highly recommend this for quilters.

Nor. D. Jan 19, 2019     

Great app to take to the fabric store. a few taps and I know how much is required for my quilt border, backing or binding. No more math in mt head! Metric to Imoerial conversion is no problem.

Mag. O. Apr 27, 2020     

The best tool for quilters! You can figure out how much fabric to buy, how many cuts out of a piece of fabric, what size backing and batting to buy. I never leave home without it!

Sta. F. Jun 18, 2020     

Every Quilter should have this! So useful when figuring out cuts and yardage, great for designing your own patterns.

Dan. F. Jan 18, 2020     

Not always accurate on borders. It stated I need 6 yds for a 12 inch border for a 39x64. Did the formula by hand and only need 2 1/2, based on a 40 fabric width. but other computations were correct

San. E. Feb 4, 2021     

I love this app. I used it on my old Kindle but couldn't get it on my new one and I was really upset. Now I have it on my phone and it will be right there when I need it at the quilt shop or in my sewing studio.

Sus. L. Sep 15, 2018     

Previous version worked. On pieces 2 yardage there's no way to input # of pieces. Is it just my Samsung J3Star that has problems? Useless as it is.

Cal. Jan 8, 2020     

Not as accurate as it should be, or as needed to be. Doesn't have fabric width conversions for backing.

Pat. Y. May 16, 2022     

Amazing! Wish I knew about these charts before now. Will refer to them often.

Daa. B. Feb 13, 2019     

wish it helped with designing my own quilt and figuring out the yardage needed for a quilt top and not just for borders, binding and backing...bummer.

Hel. C. May 22, 2021     

Not sure how well it works since it's white letters on beige background making it impossible to read anything

Ann. R. Jul 11, 2019     

I work in a quilt store and we use this app every day. Very helpful for us.

B. J. U. M. Jun 19, 2019     

Very helpful for figuring out how much backing & batting to use.

Sha. H. Apr 13, 2020     

Accurate measurements. It helps me know how much fabric to buy. Perfect!

Lau. B. Oct 5, 2021     

Best app for calculating binding, backing, etc.

Deb. M. Oct 2, 2021     

An app quilters refer to often to help them figure out yardage needed for binding and borders.

Kim. H. Jan 1, 2020     

No more math! Yea! One thing...RK could you make it so I can save a project and name it and pull the calculations up when I am fabric shopping? Thanks!

Amy. B. a. D. S. J. Dec 8, 2019     

Installed... Typed in my question, got a simple answer, no mess, no fuss. Thank you!

Shi. D. Apr 7, 2019     

could not get it to download tried. 3 times

Dia. T. Jul 1, 2019     

excellent, easy to use app, thank you

nan. s. Sep 26, 2019     

I use it all the time. Very accurate