Guides
Crochet Math
Simple crochet math for stitch counts, repeats, sizing, measurements, and project planning.
Crochet often needs a little math, especially when changing sizes, planning repeats, or working toward a specific measurement.
These guides explain crochet calculations in simple steps so you can understand the numbers and make better project decisions.
Crochet Hook Size Chart: US, UK and Metric
Use this crochet hook size chart to convert common hook sizes between US, older UK, and metric measurements, then check your gauge before starting.