Knitting & Crochet calculators
Tools for the fiddly sums in knitting and crochet patterns: spreading shaping evenly, sizing a hat, estimating yarn for a blanket, and converting needle and hook sizes between metric, US and UK.
Every tool works in your browser and prints cleanly, so you can keep the instructions next to your pattern. Start a hat with the hat size calculator, then shape the crown with the decrease evenly calculator.
Shaping
Spread increases and decreases evenly across a row or round.
Project planning
Stitch counts and yarn amounts before you cast on.
Reference charts
Size conversions to keep next to your pattern.