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Crochet Yarn Calculator — how much yarn do I need?

Enter your project size and stitch, and get the yards/metres and number of skeins to buy. Works in cm or inches, with real stitch-consumption factors — not a guess.

How the calculator works

Yarn consumption depends on three things: the area you're covering, the yarn weight (thicker yarn covers more area per yard), and the stitch (a bobble stitch eats far more yarn than a lacy mesh of the same size). The calculator multiplies a base consumption per 4×4 in square for your yarn weight by a stitch factor drawn from real swatches, then adds a 12% safety margin so you never run out one row from the end.

The most accurate method is always your own swatch: crochet a 4×4 in (10×10 cm) square in the exact yarn, hook and stitch, measure the yarn it used, and type that number into the swatch box. The calculator then scales your real figure to your project.

Yarn needed for common projects (worsted / #4)

ProjectSizeApprox. yardsApprox. metres
Dishcloth8 × 8 in60–8055–75
Scarf6 × 60 in400–600365–550
Beanie (adult)150–250140–230
Baby blanket30 × 36 in1,000–1,500900–1,400
Throw50 × 60 in1,500–2,5001,400–2,300
Queen blanket90 × 90 in3,000–4,0002,750–3,650
Adult sweaterS–XL1,000–1,800900–1,650
Amigurumi (small)4–6 in50–10045–90

Frequently asked

How much yarn do I need for a crochet blanket?

A baby blanket (30×36 in / 75×90 cm) in worsted/aran yarn needs roughly 1,000–1,500 yards (900–1,400 m). A throw (50×60 in) needs 1,500–2,500 yards; a queen blanket 3,000–4,000 yards. Textured stitches use 20–40% more. Use the calculator above with your own gauge for an exact figure.

How much yarn for a scarf?

A standard 6×60 in (15×150 cm) scarf in worsted weight uses about 400–600 yards (365–550 m) — usually 2–3 skeins. Chunky yarn needs fewer yards but more skeins by weight.

How do I calculate yarn from a swatch?

Crochet a 10×10 cm (4×4 in) swatch in your stitch, then unravel it and measure the yarn used — or weigh it. Yarn needed = (project area ÷ swatch area) × yarn in swatch, plus 10–15% for safety. That is exactly what this calculator does.

Why does my project use more yarn than the pattern says?

Tighter tension, a larger hook, a different yarn weight, or a more textured stitch (bobbles, cables, puffs) all change consumption. Always buy one extra skein from the same dye lot.

Related: Foundation chain calculator · Hook size chart · Full guide: how much yarn do I need?

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