Stitch & Sum
All calculators
QuiltingBackingBindingBattingBordersQuilt sizeHSTsFlying geeseCutting yardage
Cross-stitchFabric sizeCount converter
Knitting & crochetGauge & cast-onEvenlyBlanket sizeYarn swap
SewingCircle skirtYard converter
GuidesHow we check the math

Fabric and yarn math, sorted before you cut.

Sixteen free calculators for quilters, stitchers, knitters and sewists. Each one shows its working, rounds the way shops actually cut, and explains the method underneath, so you can check it against your pattern.

Start with quilt backing →

Backing for a 60″ × 72″ top

3 7/8 yd of 42″ usable fabric

2 panels, each cut 68″ long, seams running side to side.

Backing needs to be68″ × 80″
Other direction (seams running top to bottom)4 1/2 yd
108″ wide backing2 yd
In meters3.54 m

Rounded up to the next 1/8 yard. Prewashing? Add about 5% before you buy.

Pick your craft

A finished patchwork quilt hung over a wooden fence postQuiltingBacking, Binding, Batting, BordersClose-up of a floral cross-stitch on Aida with a color chartCross-stitchFabric size, Count converterThree balls of yarn and a crochet hook on a crocheted blanketKnitting & crochetGauge & cast-on, Evenly, Blanket size, Yarn swapHands guiding fabric under a sewing machine needleSewingCircle skirt, Yard converter

Quilting All quilting tools →

Backing, binding, batting, borders and the blocks in between. Every result is rounded up to the next 1/8 yard, the smallest cut most quilt shops sell.

Quilt Backing CalculatorYardage for 42″ fabric or 108″ wide backing, with the cheaper seam direction picked for you.Quilt Binding CalculatorHow many strips to cut and how much fabric they take.Quilt Batting CalculatorThe smallest batting package or roll length that covers your quilt.Quilt Border CalculatorBorder strip lengths, strip count and yardage for any border width.Quilt Size CalculatorFinished quilt size for any mattress, drop and pillow tuck.Half-Square Triangle CalculatorSquare sizes for 2-, 4- and 8-at-a-time HSTs, exact or with trimming room.Flying Geese CalculatorNo-waste and stitch-and-flip cutting sizes for any goose.Fabric Cutting CalculatorHow much yardage or how many fat quarters a stack of squares or rectangles needs.

Cross-stitch All cross-stitch tools →

Turn a chart’s stitch count into a finished size and the piece of Aida, evenweave or linen to buy.

Cross-Stitch Fabric CalculatorFinished design size and fabric to buy, for Aida or evenweave over two.Cross-Stitch Count ConverterSee one chart at every fabric count side by side.

Knitting & crochet All knitting & crochet tools →

Gauge, cast-on counts, shaping spread evenly across a row, blanket sizes and yarn swaps.

Knitting Gauge CalculatorCast-on and row counts from your swatch, with pattern multiples.Increase & Decrease Evenly CalculatorRow-by-row instructions to spread increases or decreases evenly.Blanket Size CalculatorCommon blanket sizes and the stitches to cast on or chain at your gauge.Yarn Substitution CalculatorHow many skeins of a different yarn replace the one in your pattern.

Sewing All sewing tools →

Circle skirts and the fraction-heavy conversions between yards, inches and meters.

Circle Skirt CalculatorWaist radius, hem radius and fabric for full, half and quarter circles.Fabric Yardage ConverterYards, fractions, inches and meters, converted both ways.

Guides All guides

A needle resting on a cross-stitch piece in progressAida, evenweave or linen? Choosing cross-stitch fabric without the guessworkOctober 21, 2026Close-up of a patchwork quilt on a bedHow much fabric does a throw quilt really take? A full plan, start to finishOctober 21, 2026Hands knitting a piece of fabricWhy your gauge swatch lies, and how to make it tell the truthOctober 21, 2026

Why trust these numbers?

Every calculator is checked against published charts from fabric companies, the Craft Yarn Council's yarn standards and well-known tutorials before it goes live, and the math library is covered by automated tests. Each page lists its sources. Read how we check the math.