Free crochet tool
Crochet Gauge Calculator
A crochet gauge calculator compares the stitches and rows you get in a 4-inch swatch with the gauge a pattern asks for. It shows how big your project will turn out at your tension and how many stitches to use instead, so the finished size matches the pattern.
By the crochetpatterns.io editorial team · Reviewed · Editorial policy
Result
Your stitches are larger than the pattern’s. Try a hook 0.5 mm smaller.
How is crochet gauge calculated?
Gauge is stitches per 4 inches (10 cm). Divide the stitch count in the pattern by the pattern gauge, then multiply by 4 to get the intended width. Doing the same with your own gauge gives the width you will actually get.
To hit the intended width at your tension, multiply the intended width in inches by your stitches per inch. The calculator rounds to the nearest whole stitch.
Should I change hook size or stitch count?
If you have more stitches per 4 inches than the pattern, your stitches are small: go up a hook size. Fewer stitches means go down a hook size. Changing hook size keeps the drape the designer intended.
Recalculating the stitch count works well for simple rectangles such as scarves and blankets. It is riskier for shaped garments or stitch repeats, where counts must stay a multiple of the repeat — check that with the stitch multiple calculator.
How do I measure a gauge swatch?
- Crochet a square at least 6 inches (15 cm) wide in the pattern stitch.
- Wash and block the swatch the same way you will treat the finished item.
- Lay it flat without stretching and place a ruler across the middle.
- Count the stitches across 4 inches and the rows down 4 inches.
Frequently asked questions
Does gauge matter for amigurumi?
Exact gauge matters less, but stitches must be tight enough that stuffing does not show. Size will change with tension.
Why does my row gauge differ when my stitch gauge matches?
Row height depends on how you pull up loops. Match stitch gauge first, then add or remove rows to reach the stated length.
Can I use centimetres?
Yes. Gauge over 10 cm works the same way — enter every measurement in centimetres and the results come out in centimetres.