#embroidery

Cross-stitch and embroidery maths as an API, computed locally and deterministically — the design-size, fabric and floss numbers a cross-stitcher, embroidery designer or needlework-shop works a project out with. The design-size endpoint turns a stitch count and a fabric count (stitches per inch) into the finished size: size = stitch count ÷ fabric count, so a 140 × 98 design on 14-count Aida finishes at 10 × 7 inches (25.4 × 17.8 cm), smaller on 18-count and larger on 11-count because a higher count packs more stitches per inch — and it returns the total stitch count (width × height) that drives the floss and the hours. The fabric-needed endpoint adds a margin on every side to give the fabric to cut: design size + twice the margin per dimension, with the usual 3 inches per side for hooping, framing and finishing, so a 10 × 7 design wants a 16 × 13 inch cut. The thread-length endpoint estimates floss from the geometry of a full cross — the front two diagonals plus the back returns is about (2√2 + 2) ÷ fabric count inches per stitch — so 5,000 stitches on 14-count is roughly 1,724 inches, about 44 m, and it estimates the skeins given the number of strands (a 6-strand skein is ~8 m). Everything is computed locally and deterministically, so it is instant and private. Ideal for cross-stitch and embroidery pattern tools, needlework-shop and kit apps, and craft-project calculators. Pure local computation — no key, no third-party service, instant. Floss figures are planning estimates — buy a little extra and dye-lot match. 3 compute endpoints. For sewing yardage use a sewing API; for knitting gauge a knitting API.

api.oanor.com/embroidery-api

Cross-stitch and counted-thread maths as an API, computed locally and deterministically — the design-size and floss numbers a stitcher plans a pattern with. The design endpoint turns a stitch count into a finished size on a given fabric count: design size = stitch count ÷ fabric count (stitches per inch), so a 140×98-stitch chart on 14-count Aida stitches up at 10×7 inches (25.4×17.8 cm); it adds the fabric to cut with a margin (≈3 inches each side for the hoop and finishing), reports the total stitches, and converts the same chart to another count — that 140×98 design shrinks to 7.8×5.4 inches on 18-count. The floss endpoint estimates the skeins of thread: skeins ≈ ceil(stitches ÷ stitches-per-skein), where about 1,200 full cross-stitches per skein is typical for two strands on 14-count, and it makes sure you buy at least one skein per colour. Everything is computed locally and deterministically, so it is instant and private. Ideal for cross-stitch, embroidery, needlework and craft-pattern app developers, pattern-and-kit and fabric tools, and needlework education. Pure local computation — no key, no third-party service, instant. Fabric count is stitches per inch; sizes in inches and centimetres. Live, nothing stored. 2 compute endpoints. Floss/skein figures are estimates — buy a little extra.

api.oanor.com/crossstitch-api