Free Craft Calculators

Instant answers for knitting, crochet, quilting, and sewing projects. Calculate yarn, fabric, gauge, quilt sizes, and more — no signup required.

Knitting & Crochet Calculators

View all knitting & crochet →

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Yarn Yardage Calculator

How much yarn you need for scarves, hats, sweaters, blankets & more

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Knitting Stitch Calculator

Cast-on stitches and row count from gauge and dimensions

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Knitting Gauge Calculator

Stitches and rows per inch from your swatch measurements

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Crochet Chain Calculator

Foundation chain length with turning chain for any stitch type

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Crochet Hook Size Converter

Convert between US letter, US number, and metric mm sizes

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Crochet Blanket Size Calculator

Yarn, stitches, rows, and skeins for any blanket size

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Granny Square Calculator

Squares needed for a blanket with layout and yarn estimates

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Hat Size Calculator

Cast-on stitches, height, and crown decreases for any head size

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Knitting Needle Size Converter

Convert needle sizes between US, UK, and metric systems

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Yarn Weight Converter

Convert yarn weights between US, UK, Australian, and WPI systems

Sewing & Quilting Calculators

View all sewing & quilting →

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Fabric Yardage Calculator

How much fabric for dresses, shirts, curtains & more

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Seam Allowance Calculator

Cut dimensions with seam and hem allowances for any pattern piece

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Bias Tape Calculator

Fabric needed to make bias tape or continuous bias binding

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Button Spacing Calculator

Even button placement and buttonhole length for any garment

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Elastic Waist Calculator

Elastic cut length and casing width for skirts, pants, and shorts

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Pattern Resize Calculator

Scale knitting or sewing patterns up or down to any size

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Quilt Size Calculator

Quilt dimensions, blocks, and fabric for any bed size

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Quilt Binding Calculator

Binding strips and fabric needed for any quilt

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Cross Stitch Fabric Calculator

Finished size and fabric needed for cross stitch designs

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Embroidery Thread Calculator

Floss yardage and skein count for any embroidery design

Latest Guides

How Many Stitches to Cast On for a Scarf, Blanket, or Hat

Learn exactly how many stitches to cast on for any knitting project. Stitch count charts for scarves, blankets, hats, and sweaters by yarn weight.

5 min read

How Stitch Patterns Affect Your Gauge (and Stitch Count)

Cables, ribbing, lace, and seed stitch all change your gauge. Learn how each pattern affects width and row count so your projects come out the right size.

6 min read

Crochet Blanket Sizes: Standard Dimensions, Stitch Counts & Yarn Needed

Every standard crochet blanket size from lovey to king with dimensions, starting chain counts, row counts, and total yarn yardage. Reference chart included.

9 min read

Crochet Hook Sizes: Complete Guide with Conversion Chart

Full crochet hook size chart with US letter, metric mm, and UK conversions. Includes recommended yarn weight for each hook and tips for choosing the right size.

8 min read

How Much Yarn for a Blanket? (Yardage Chart by Size & Weight)

Find exactly how much yarn you need for any blanket. Charts for baby, throw, twin, queen, and king sizes in every yarn weight from fingering to super bulky.

9 min read

What Is Knitting Gauge? How to Swatch, Measure & Adjust

Knitting gauge explained: what it is, why it matters, how to knit and measure a gauge swatch, and what to do when your gauge doesn't match the pattern.

10 min read

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All Craft Types

Knitting, crochet, quilting, and sewing. Tools designed by crafters, for crafters.

Buy What You Need

No more guessing at the yarn shop. Calculate exact yardage, fabric, and supplies before you buy.