Knitting & crochet tools
Free calculators that do the maths for you. Every tool works on your phone and needs no sign-up.
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Yarn quantity calculatorHow much yarn for a blanket, hat, scarf, sweater or socks, in any yarn weight.Size chartsStandard blanket, hat, sock and sweater sizes in inches and centimetres.Needle, hook & yarn convertersUS, UK and metric needle and hook sizes, yarn weights and crochet terms.Cast-on calculatorHow many stitches to cast on for the width you want.Increase & decrease evenlySpread increases or decreases evenly across a row, with written instructions.Gauge calculatorTurn your swatch into stitches per 10 cm and adjust a pattern to your gauge.Temperature blanket plannerReal daily temperatures for your town, colour bands, and a day-by-day tracker.Row & stitch counterMultiple counters and repeats that keep your screen awake and remember your place.