How much yarn do I need? The honest answer

A chart for common projects, the five things that change your yardage, and a 15-minute method that makes the estimate exact.

By Susi, founder of Crochets · left-handed since day one · updated September 2026

In this guide: The short answer, by project What actually changes yarn usage The swatch method (exact, 15 minutes) Reading a yarn label Running out of yarn: what to do

The short answer, by project

Project (worsted / #4 yarn)	Yards	Metres	Skeins (≈200 yd)
Dishcloth 8×8 in	60–80	55–75	1
Scarf 6×60 in	400–600	365–550	2–3
Adult beanie	150–250	140–230	1–2
Baby blanket 30×36 in	1,000–1,500	900–1,400	5–8
Throw 50×60 in	1,500–2,500	1,400–2,300	8–13
Queen blanket 90×90 in	3,000–4,000	2,750–3,650	15–20
Adult sweater	1,000–1,800	900–1,650	5–9
Small amigurumi	50–100	45–90	1

Those ranges are wide on purpose: the same blanket in a bobble stitch uses up to 40% more yarn than in plain double crochet. For your exact number, use the yarn calculator — or better, the swatch method below.

What actually changes yarn usage

Stitch. Dense stitches (sc, linen, waffle, puff) use more yarn per square inch than tall, open ones (dc, mesh, granny). Post stitches and bobbles are the hungriest.
Yarn weight. Thicker yarn covers more area per yard — but you buy it by weight, so you may need more skeins of chunky yarn than of DK.
Your tension. A tight crocheter packs more stitches (and yarn) into the same area. A gauge swatch reveals this before you buy.
Hook size. One size up = looser fabric = less yarn per area, more drape.
Colour changes and ends. Every colour change wastes 10–15 cm. Stripes and granny squares need a margin for this.

The swatch method (exact, 15 minutes)

Crochet a 10×10 cm (4×4 in) square in the real yarn, hook and stitch. Work a little bigger and measure the central 10 cm.
Unravel it and measure the yarn with a tape, or weigh the swatch on a kitchen scale.
Yarn needed = (project area ÷ 100 cm²) × yarn in the swatch. If you weighed it: project weight = (project area ÷ 100) × swatch grams; convert to skeins with the grams on the label.
Add 10–15%. Round up to whole skeins. Buy from one dye lot.

Type your swatch yardage into the calculator and it does steps 3 and 4 for you.

Reading a yarn label

Every label shows weight in grams and length in yards/metres — the second number is the one that matters for planning. Two 100 g balls can differ wildly in length (a 100 g DK ball ≈ 250 m; a 100 g super-bulky ≈ 80 m). Also on the label: the recommended hook size and the dye lot number — buy all skeins from the same lot or stripes may appear that you didn't plan.

Running out of yarn: what to do

If the shop has the same dye lot, you're saved. If not: alternate the old and new skeins every two rows for the last part of the project so the shade shift blends. Or make the shortage a design feature — a contrasting border is the classic rescue. Next time, use the calculator and buy the extra skein; unopened skeins can usually be returned.

Frequently asked

How much yarn for a crochet blanket?

1,000–1,500 yards for a baby blanket, 1,500–2,500 for a throw, 3,000–4,000 for a queen size in worsted weight. Textured stitches need up to 40% more.

How many skeins is 1,500 yards?

Divide by the yards on your label: at 200 yd/skein, 1,500 yd = 8 skeins (7.5 rounded up). Buy one extra.

Does a bigger hook use less yarn?

Yes — a larger hook makes looser, more open fabric, so the same area uses less yarn. It also changes the drape and the finished size, so swatch first.

How do I estimate yarn for amigurumi?

Small toys (4–6 in) use 50–100 yards in worsted; medium (8–10 in) 150–250 yards. Tight single crochet on a small hook is dense, so don't scale from blanket figures.

Design it, and the yarn maths is done

Draw your piece in Crochets — it counts every stitch, calculates the yarn, and shows a photo of the finished piece before you buy a skein.

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