About HookMath

HookMath is a small collection of free tools that do the maths of crochet for you: how much yarn to buy, what to charge for your work, how to spread increases evenly and how to shape an amigurumi ball.

Every tool works in your browser, loads fast on a phone and needs no account.

Have an idea for a tool, or found a mistake? Write to hello@hookmath.com.