Quilting Calculators
Plan every layer of your quilt with accurate fabric estimates. These calculators handle backing, binding, borders, blocks, batting, and sashing for standard quilting cotton widths.
All calculations assume standard quarter-inch seam allowances and round up to purchase increments so you always have enough fabric.
Latest in Quilting
- Half-Square Triangle CalculatorCalculator ·
- Fabric Scrap CalculatorCalculator ·
- Quilt Project Cost CalculatorCalculator ·
Quilt Backing Calculator
Quilt backing yardage and the most efficient piecing layout — 4-inch overhang, horizontal vs vertical seam comparison, 42-inch WOF and 108-inch wide backs.
Quilt Block Calculator
Plan quilt block layouts and per-colour fabric — 12.5-inch cut for 12-inch finished blocks (¼-inch SA), customisable sashing, borders, and 42-inch WOF.
Quilt Binding Calculator
Quilt binding yardage for straight-grain or bias — 2.25 or 2.5-inch double-fold cuts, 10-inch mitered corner allowance, and 42-inch WOF strip counts.
Quilt Border Calculator
Quilt border fabric for single or multiple borders — butted or mitered corners, 2-4-inch borders for small quilts up to 5-8 inches for king-size tops.
Quilt Batting Calculator
Match your quilt top to a standard batting package — Crib 45×60, Twin 72×90, Full 81×96, Queen 90×108, King 120×120 — with 4-inch overhang per side.
Quilt Sashing Calculator
Sashing fabric for quilt blocks — strip widths 1-4 inches, cornerstone counts, and horizontal/vertical strip totals per layout with ¼-inch seam allowance.
Strip Piecing Calculator
Plan strip piecing for jelly roll quilts — 40 strips × 2.5-inch WOF standard, fabric yield, finished dimensions, and ¼-inch seam allowance throughout.
Charm Pack Calculator
How many charm packs for a quilt — 42 squares per pack, 5-inch cut finishing at 4.5 inches after ¼-inch seam allowance, plus layout and fabric estimates.
Jelly Roll Calculator
See what your jelly rolls make: one 40-strip roll sews into a 50-by-64-inch race quilt. Estimate finished size, fabric, and binding yield from each roll.
Quilt Pattern Resize Calculator
Resize a block quilt pattern to a new size: get the scale factor, new block dimensions, finished size, and area-scaled fabric in imperial or metric.
Scrappy Quilt Binding Calculator
Plan a scrappy quilt binding from your fabric scraps: how many segments to cut across multiple fabrics, diagonal-join waste, and the equivalent yardage.
Quilt Project Cost Calculator
Estimate what a quilt costs to make from your own fabric, batting, binding and quilting prices — an itemised budget plus an optional selling price.
Fabric Scrap Calculator
Turn fabric scraps into a quilt: how many scrap squares of any size you need, the total scrap area to gather, and what your stash already covers.
Half-Square Triangle Calculator
Calculate half-square-triangle cut sizes for the 2-, 4-, and 8-at-a-time methods, the squares to cut, and the HST yield from a fat quarter.