Crochet & Knitting Calculators
Yarn quantity, gauge, hook and needle sizes, and the cost of a project. Start with the yarn calculator to find out how many skeins you actually need.
Blanket Yarn Calculator
Yarn estimates for bed and throw blankets by size, with the standard blanket dimensions already filled in.
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Crochet Hook Size Converter
Convert crochet hook sizes between metric millimetres, US letter sizes and the old UK numbering.
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Crochet Project Cost Calculator
Add up the yarn, supplies, pattern and labour costs of a crochet project, then see a suggested selling price.
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Gauge Calculator
Turn a measured swatch into stitches and rows per inch and per centimetre, and see the stitch count for a width.
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Knitting Needle Size Converter
Convert knitting needle sizes between metric millimetres, US numbers and old UK numbers.
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Knitting Project Cost Calculator
Total the cost of a knitting project including needles and notions, then see a suggested selling price.
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Project Time Estimator
Estimate how many hours a knitting or crochet project will take from its stitch count and your working speed.
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Scarf Yarn Calculator
Yarn estimates for scarves, cowls and infinity scarves by style, with the usual dimensions prefilled.
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Stitch Calculator
Work out how many stitches to cast on or chain, and how many rows to work, for any width and height.
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Sweater Yarn Calculator
Yarn estimates for sweaters and cardigans by size, sleeve style and yarn weight, with a breakdown by piece.
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Yarn Calculator
Work out how much yarn a project needs from its finished size, your stitch gauge and the yarn weight you plan to use.
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Yarn Length Calculator
Convert between yards and metres, and work out how much length is left on a part skein by weighing it.
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Yarn Weight Converter
Convert between the US yarn weight numbers, the UK and Australian ply names, and wraps per inch.
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Other calculator categories
Educational estimates only. Results on this page are free educational estimates based on the numbers you enter and standard formulas, not financial advice. Nothing you calculate here is stored.