Interactive calculator
Crochet gauge calculator
Turn a measured crochet swatch into the stitch and row counts needed for a target width and height.
Enter your measurements
Results update automatically and stay on your device.
Measured swatch
Target size
Calculated counts
Formula: target span × measured count ÷ measured swatch span.
Formula
Target count = target span × measured swatch count ÷ measured swatch span.
Source notes
Last reviewed September 1, 2026
- Craft Yarn Council: Standard Yarn Weight System Yarn weight categories, common names, gauge ranges, and tool ranges.
- Craft Yarn Council: Hooks & Needles Metric and US hook and needle size tables; gauge-swatch qualification.