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.Cross-stitch temperature trackerReal daily temperatures turned into a DMC floss chart, with skeins and a day-by-day tracker.Mood, sky & reading trackerA year-in-pixels grid for a mood, sky or reading blanket or stitch-along. Tap a day to colour it.Granny square blanket plannerSquares for any blanket size, yarn for squares, joins and border, and a shuffled colour map.C2C blanket plannerCorner-to-corner tiles and yarn for any size, an editable colour graph and a row-by-row list.Stripe generatorRandom, even, Fibonacci or ombré stripes sized to your project, with yarn per colour.Cross-stitch floss calculatorSkeins of stranded cotton for every colour in your chart, on any fabric.Cross-stitch fabric calculatorFinished size, fabric to cut, hoop, strands and needle for any stitch count.Skein converter (yarn substitution)Skeins of the pattern yarn to skeins of yours, by length, with a thickness check.US ↔ UK crochet pattern converterPaste a pattern and swap US and UK crochet terms, with every change highlighted.Handmade pricing calculatorMaterials, time and fees in, a fair price out, and what you really earn per hour.