Robert Kaufman Fabrics and Quilter's Paradise have joined forces to bring you a collection of eight essential quilting calculators.

With these calculators you'll be able to quickly convert between yards and inches, meters and centimeters; learn how much fabric you need for backing, batting and borders; and determine how many rectangular pieces can be cut from a larger piece. There are even calculators for square-in-a-square, set-in and corner triangles.

Here's a brief description of each calculator:

Fabric Measurement Converter: Converts between inches and yards in decimal form, and yards in fractional form. (With metric equivalents.)
Backing and Batting Calculator: Determines how much material from a bolt of fabric is needed to make the backing for a quilt.
Piece Count Calculator: Shows the number of fixed-sized pieces of fabric that can be cut from a larger piece.
Pieces to Area Calculator: Indicates how much fabric is needed in order to cut a given number of fixed-sized 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 a quilt’s dimensions and the width of the borders.

Square-in-a-Square Calculator: Works out 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.

What's New

Version 3.2

- General performance and stability improvements.
- Fixed bugs and mathematical functionality.

Ratings and Reviews

3.7 out of 5
23 Ratings
23 Ratings

Please provide landscape mode/iPad version


This app has been very handy for me. I haven’t found the miscalculation some have reported, although if you really want to save every inch it might be a bit generous. However, I have an iPad in my sewing room that’s on a stand in landscape mode mode which I use for viewing PDFs while sewing, etc. When I want to use this app I’ve got to unplug it and rotate which is cumbersome and inconvenient. I also took a star off because there are some typos in the text, some of which are just grammatical and can easily be ignored, but some are confusing, such as combining inches and centimeters in the same explanation (eg, in the discussion of how backing is calculated they add an overage of 4 cm to a quilt measured in inches). It’s obvious the writer meant inches but these things should be caught in proofreading.

So, 4 stars for the iPhone, but 2 for the iPad.

This has been so helpful!


I didn't sew until I was 70 - office machines held my attention all my business life and I was tech / app savvy. When I found this app, I had no idea it would be so handy!! Always with me, I can figure yardage faster than my math-friendly husband - and know which direction to cut my pieces to save yardage. I encourage my quilting friends to take a look, promising them if they don't like it, one lady much is in me. Thanks for providing this help.

Helpful in a Pinch


Ever find a fabric you love but forgot how much you need? Or make an adjustment in the pattern? This app helped me. I also designed my own quilt pattern and was able to determine how much fabric I would need. I have not had issues I've seen in other posts. Just be sure to put right info in correct boxes.


Handmade Interactive LLC
68.8 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Application copyright 2012 by Robert Kaufman Fabrics. Calculators copyright 2012 by Quilter's Paradise.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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