Free Craft Calculators

Calculate how much yarn you need for any project — scarves, hats, sweaters, blankets, and socks. Supports all yarn weights from lace to super bulky.

Calculate how many stitches to cast on and rows to knit. Enter gauge and project dimensions for instant results with presets for scarves, blankets, and more.

Calculate your stitches per inch, rows per inch, and total stitches/rows needed for any project from your swatch measurements.

Calculate foundation chain length for any crochet project. Enter width and gauge — get chain count with turning chain for sc, hdc, dc, or tr.

Convert crochet hook sizes between US letter, US number, and metric (mm) systems. Complete reference chart included.

Convert knitting needle sizes between US, UK, and metric (mm) systems. Complete chart with recommended yarn weights for every needle size.

Convert yarn weights between US, UK, Australian, and WPI systems. Includes needle/hook sizes, gauge range, and yardage per 100g.

Calculate cast-on stitches, hat height, and crown decreases for any head size. Presets for baby through adult with all yarn weights.

Calculate how much yarn you need for a crochet blanket. Get total stitches, rows, yardage, and number of skeins for any blanket size.

Calculate how many granny squares you need for a blanket. Get rows, columns, yarn per square, and total yarn estimate with common size presets.

Calculate quilt dimensions, number of blocks, rows, columns, and total fabric for blocks, sashing, borders, backing, and binding.

Calculate binding strips and fabric needed for any quilt. Enter dimensions and strip width to get perimeter, number of strips, and total yardage.

Calculate cut dimensions with seam and hem allowances. Supports standard, French, flat-felled, overlock, and quilting seams.

Calculate even button spacing for any garment. Get exact position for each button and correct buttonhole length.

Calculate how much fabric you need to make bias tape. Get cut width, yardage, and fabric square size for continuous bias binding.

Calculate how much fabric you need for garments, curtains, and home projects. Accounts for fabric width and directional prints.

Scale any knitting or sewing pattern up or down. Enter original and desired sizes to get adjusted stitch count, row count, and resize percentage.

Calculate elastic cut length and casing width for skirts, pants, and shorts. Accounts for elastic type, width, and garment style.

Calculate finished size and fabric needed for cross stitch designs. Supports Aida, evenweave, and linen with stitch-over-1 and stitch-over-2.

Calculate how much embroidery floss you need for any design. Enter dimensions, coverage density, and strand count for total yardage and skein count.