Site policy

Accuracy & measurement disclaimer

Stitch Size Lab provides educational craft-reference information, not guarantees of fit, safety, material performance, or professional advice.

Pattern and label priority

The pattern gauge, pattern dimensions, yarn label, tool package, fabric label, machine manual, and manufacturer instructions take priority over generic charts on this site.

Swatches and tolerances

Individual tension, fiber, construction, finishing, washing, blocking, tool material, screen rendering, and manufacturing tolerances can change results. Make and treat a representative swatch before committing materials.

Project dimensions

Hat, blanket, and quilt dimensions are starting guidance only. They are not medical sizing, protective-equipment guidance, infant-sleep advice, toy-safety guidance, or a guarantee of fit.

Calculator limits

Calculators apply the formulas shown to the numbers entered. Users remain responsible for pattern repeats, shaping, seams, borders, finishing allowances, rounding, and input accuracy.

Effective and last reviewed: September 1, 2026.