Crochet Gauge: How to Make and Measure a Swatch (and Fix It)

How to make and measure a gauge swatch

1. Step 1 — Read the gauge: e.g. "14 sts and 16 rows = 4 in in sc with a 5 mm hook".
2. Step 2 — Crochet bigger than the gauge square: chain enough for about 6 in, and work in the stated stitch until the swatch is about 6 in tall. Edges distort, so you'll measure only the middle.
3. Step 3 — Block it: wash or wet the swatch the way you'll treat the finished item, and let it dry flat.
4. Step 4 — Measure: lay a ruler across the middle and count the stitches in exactly 4 in, including half stitches. Then count rows in 4 in vertically.
5. Step 5 — Compare and adjust: too many stitches → go up a hook size. Too few → go down. Swatch again.

A worked example

The pattern says 14 sts = 4 in. Your swatch has 16 sts in 4 in. Your stitches are smaller, so your sweater would come out about 12% too small (14 ÷ 16 = 0.875). Go up one hook size and swatch again — usually that's enough.

When gauge matters (and when it doesn't)

• Matters: sweaters, cardigans, tops, hats, socks — anything that must fit. See our beginner sweater.
• Matters a bit: blankets (for size and yarn amount).
• Doesn't matter much: amigurumi, dishcloths, coasters, decorations — though a tight fabric is still important for amigurumi.

Common questions

Why does my gauge change halfway through a project?

Your tension relaxes as you get comfortable, or tightens when you're tired or stressed. Re-measure every few inches on garments, and avoid crocheting important pieces when you're tense.

Do I really need to block my swatch?

Yes, for garments. Many yarns grow or shrink when washed — cotton and acrylic often relax, wool can bloom. An unblocked swatch can mislead you by a whole size.

What's the difference between gauge and tension?

Nothing — gauge is the US term and tension the UK term. More conversions in our US vs UK guide.

Swatching is boring — but frogging a whole sweater is worse. 🧶