Crochet Gauge Calculator
Count what you counted, measure what you measured — get your gauge in the standard 10 cm (4 inch) format patterns use.
How the gauge calculator works
- Find stitch density. Stitches per cm = stitches counted ÷ measured width. Counting 16 stitches over 10 cm gives 1.6 stitches per cm.
- Scale to the standard. Gauge = density x 10 for centimeters, density x 10.16 for the 4-inch view. The 16-stitch sample is 16 sts per 10 cm, or 16.3 sts per 4 inches.
- Repeat for rows. Rows work the same way against the measured height: 24 rows over 10 cm is 24 rows per 10 cm, or 24.4 rows per 4 inches.
Gauge calculator FAQ
How do I measure crochet gauge correctly?
Crochet a swatch at least 15 x 15 cm (6 x 6 inches) in the exact stitch, hook, and yarn the project uses, block it the way the finished item will be blocked, then count stitches and rows inside the middle — edge stitches distort, so never count them.
Why convert my gauge to 10 cm or 4 inches?
Published patterns state gauge over 10 cm (4 inches). Converting your counted swatch to the same standard tells you instantly whether you match the pattern or need to change hook size.
Does it matter if I measure in inches or centimeters?
No. Count whatever width you measured over, pick the matching unit, and the calculator converts to both the 10 cm and 4 inch standards for you.
My gauge does not match the pattern — what now?
If you are off by more than half a stitch over 10 cm, change hook size rather than crocheting tighter. Going up 1 mm adds roughly 1 to 2 stitches per 10 cm, going down removes about the same.