Quilting Calculators

Free quilting calculators for backing yardage, binding strips, half-square triangles and finished quilt size, with charts for every standard bed size.

Half Square Triangle Calculator
Cutting sizes and square counts for 2-, 4- and 8-at-a-time HSTs.
Quilt Backing Calculator
Yardage, panels and seam direction for any quilt back.
Quilt Binding Calculator
Strips to cut and fabric to buy for double-fold binding.
Quilt Size Calculator
Finished size from blocks and borders, or the right size for your bed.

Standard quilt sizes

Most patterns are written for one of these finished sizes. Bed quilts depend on the mattress and how far the quilt should hang over the sides (the drop), so measure your bed if the quilt has to fit exactly.

SizeTypical finished quiltCommon use
Crib36 × 52 in (91 × 132 cm)Baby crib or play mat
Throw60 × 70 in (152 × 178 cm)Sofa or lap
Twin70 × 90 in (178 × 229 cm)Twin bed with a short drop
Full84 × 90 in (213 × 229 cm)Full or double bed
Queen90 × 108 in (229 × 274 cm)Queen bed
King108 × 108 in (274 × 274 cm)King bed

Which calculator do you need?

Start with the quilt size calculator if you are planning blocks and borders. Once you know the finished size, the backing and binding calculators tell you how much fabric to buy for the back and the edges, and the half-square triangle calculator gives the cutting size for HST units.