We get asked this question a lot: "How much fabric will I need for binding?" So here's how to work it out yourself!
How to calculate for a standard, straight-grain, 2½ wide, double-fold binding :
- Measure the width (A) and length (B) of your quilt; add these together, then multiply by two to find the total perimeter,
Eg, 50" + 72" = 122" x 2 = 244" total perimeter (If your quilt is an odd shape, you'll need to add together all four sides instead to get this number).
- Add 20" for joining seams and corners.
Eg, 244" + 20" = 264"
- Divide the total perimeter by the usable width of the binding fabric – for most fabrics that's 40", but for extra-wides it could be up to 104" – and round up to a whole number; this is the number of strips you'll need to cut.
Eg, 264" ÷ 40" = 6.6 ≈ 7 strips
- Now multiply the number of strips by 2½ to get the quantity of fabric you need off the bolt.
Eg, 7 strips x 2½" = 17½"
- You can also round up an inch or two for straightening up the fabric for your strips, if you want to be extra careful.
Eg, 17½" ≈ 20"
Ta dah! That's how much fabric you need for binding!
Quilt shown is our "Good Times Charm Pack Quilt" kit using the "Good Times" collection from American Jane Fabrics.