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Crochet Tools & Charts
The charts I keep next to my yarn basket: hook sizes, yarn weights, US and UK terms, and a calculator that tells you how much yarn to buy. They run in your browser — nothing is stored.
Crochet Hook Size ChartMetric, US letter/number and old UK hook sizes side by side — find the right hook in seconds.Yarn Weight GuideThe 0–7 yarn weight system with common names, crochet gauge and recommended hooks.US ⇄ UK Stitch ConverterPaste a pattern and switch it between US and UK crochet terms, with the full terms chart.Yarn Yardage CalculatorEstimate how much yarn a blanket, scarf or any flat piece needs from a small swatch.