Calcometry

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Fiber & craft

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Knitting, crochet, quilting, and embroidery math: yarn yardage and skein counts, craft listing prices from materials and labor, quilt top and backing yardage, cross-stitch fabric dimensions from stitch count, and embroidery thread length estimates. Extends sewing tools for makers who sell on Etsy — planning estimates only.

Yarn quantity depends on your gauge as much as the pattern’s, and gauge is personal — two people working the same pattern with the same yarn and hook can produce noticeably different fabric. Work a swatch and compare before buying for a large project, and remember that crochet generally consumes more yarn than knitting for the same area, while textured stitches consume more than plain ones. For cross-stitch, finished dimensions come from stitch count divided by fabric count, so the same design worked on 14-count and 18-count Aida ends up quite different in size; add a margin on every edge for framing. On pricing, the common mistake is charging only for materials: the labour tool exists because hand-made work takes hours that a materials-plus-a-bit price never recovers.

5 tools in this section