Knitting Gauge Calculator — Free Online Tool

How to use Knitting Gauge Calculator

Convert blocked swatch measurements into stitches per four inches, rows per four inches, suggested cast-on count, approximate row count and stitch-multiple rounding.

1. Make and block a representative swatch in the intended stitch pattern.
2. Count stitches and rows within a measured section.
3. Enter target dimensions and any required stitch multiple.
4. Use the suggested cast-on and row estimates, adjusted for selvedges and shaping.

Important: The result estimates flat swatch gauge only. Garment ease, stitch repeats, ribbing and shaping require pattern-specific adjustments.

Formula and methodology

Stitches per inch = swatch stitches ÷ swatch width (in). Target stitches = desired width × stitches per inch, rounded to the requested stitch multiple. Rows = desired length × rows per inch.

The interactive calculations depend on the inputs, units and assumptions you provide. Display values are rounded for readability, but calculations use unrounded input values where applicable.

Worked example

A blocked swatch with 20 stitches and 28 rows measured over 4 × 4 inches has 5 stitches and 7 rows per inch. For 18-inch width, cast-on target is 90 stitches; for 24 inches length, about 168 rows.

Try entering your own measurements above to reproduce this calculation and understand each result.

Frequently asked questions