Guides

Quilt design, worked out.

Charts, calculators and step-by-step guides for planning, cutting and printing a quilt, and how to do each one in Quarter Inch. Every number is worked out by the engine that cuts your quilts.

Drawn by Quarter InchOhio and Sawtooth stars, 12″ blocks

Start here

Pick the path that sounds like you.

Calculators

The sums, done right.

Free, no account. Change the size and the answer changes, to the ⅛ yard.

All quilt math →

Quilt backing calculator

How much backing fabric to buy for any quilt, seamed down the middle or across, or 108″ wide.

Throw, 60″ × 72″4½ yd · 1 seam

Quilt binding calculator

How many binding strips to cut and how much fabric to buy for any quilt, straight or on the bias.

Throw, 2½″ strips7 strips · ½ yd

Half-square triangles

What size to cut half-square triangles: finished + ⅞″ two at a time, and the sizes for four and eight at a time.

4″ finished, two at a timecut 4⅞″ squares

Quarter-square triangles

What size square to cut for quarter-square triangles and hourglass units: finished + 1¼″, or + 1½″ to trim.

4″ finished, four at a timecut 5¼″ squares

Everything

Four shelves of guides.

Blocks

524 traditional blocks, each cut three ways.

Every block drafted as exact geometry, with its cutting at 6″, 9″ and 12″ and how it’s sewn.

Browse all 524 blocks

Design it, then cut it right.

Quarter Inch works out every cut, yardage and template for the quilt you design, on your iPad, Mac or any browser.

  • Free to start
  • iPad, Mac, Windows and phone