Knitting & crochet calculator
Gauge Calculator
Knit or crochet a swatch, count your stitches and rows over a measured area, and this calculator converts that into stitches and rows per inch, per 4 inches, and per 10cm so you can compare it directly to a pattern's stated gauge.
Gauge is the number of stitches and rows it takes to knit or crochet a given area, and it's the single most important measurement for making sure a finished project comes out the size you expect. Every knitter's or crocheter's tension is different, so the gauge listed on a yarn label or in a pattern is only a starting point - you have to check your own gauge with the yarn, hook or needle size, and stitch pattern you're actually using.
To check gauge, make a swatch at least 4 inches (10cm) square in your pattern's stitch and yarn, then lay it flat (block it first if the pattern will be blocked) and count how many stitches and rows fit across a measured width and height. Enter those counts and measurements above. The calculator normalizes your result to the standard 4-inch and 10cm gauge format most patterns use, so you can compare directly and decide whether you need a different needle or hook size.
Worked example: if you count 20 stitches and 28 rows across a 4-inch by 4-inch swatch, your gauge is 5 stitches and 7 rows per inch - exactly 20 stitches and 28 rows per 4 inches.
Frequently Asked Questions
Why does my gauge matter if I'm following a pattern exactly?
Patterns are written for a specific gauge. If your tension is tighter or looser than the designer's, your finished piece will come out a different size than intended even if you follow every instruction correctly.
How big should my gauge swatch be?
At least 4 inches (10cm) square, and ideally a bit larger so you can measure well away from the distorted edge stitches.
Should I block my swatch before measuring?
Yes, if you plan to block the finished project. Blocking (washing and laying flat, or steaming) can change gauge, especially for fibers like wool or cotton blends.
What if my stitch gauge matches but my row gauge doesn't?
This is common. Stitch gauge usually matters most for overall width, while row gauge matters most for length-driven shaping like armholes and sleeve caps. Adjust needle size for stitch gauge, and adjust row counts to compensate for row gauge if needed.