Knitting Pattern Size Converter
Adjust knitting pattern stitch and row counts when your gauge differs from the pattern, or when you want to knit a different size. Enter pattern gauge, your actual gauge, and a list of stitch counts — get the adjusted numbers instantly. Works for all yarn weights and needle sizes. Private, no sign-up needed.
Enter Gauge & Pattern Details
How Knitting Pattern Conversion Works
A knitting pattern conversion adjusts stitch and row counts from one gauge to another, so your finished project comes out the same dimensions even when your personal knitting gauge differs from the pattern's required gauge. Gauge is expressed as the number of stitches and rows over 10cm (4 inches) of stockinette stitch. The conversion ratio is simply your gauge divided by the pattern's gauge: if the pattern requires 22 stitches per 10cm and your swatch shows 24 stitches per 10cm, your stitch ratio is 24÷22 = 1.091. Every stitch count in the pattern is then multiplied by this ratio and rounded to the nearest whole number.
Stitch and row ratios are calculated independently because tension in the horizontal direction (stitch gauge) is usually different from the vertical direction (row gauge). For a sweater body worked bottom-up, you multiply the stitch count for the cast-on by the stitch ratio, and multiply any row counts or length measurements by the row ratio. Always swatch with the exact needle size, yarn, and stitch pattern you plan to use in your project — gauge can differ between stockinette and cables, and between flat and in-the-round knitting.
When to Use Pattern Size Conversion vs Gauge Adjustment
Use gauge adjustment (this tool) when you want to knit the same physical size as the pattern but your personal gauge differs. Use size conversion when you want to knit a different finished size than the pattern offers — for example, scaling a child's sweater pattern up to an adult size. For size conversion, calculate the ratio of your desired measurement to the pattern measurement and multiply all stitch counts by that ratio instead.
Pattern repeats need special handling: if a stitch pattern repeats every 6 stitches (like a 3×3 rib), your adjusted cast-on must be a multiple of 6. Round your calculated count to the nearest multiple of the repeat. This calculator rounds to the nearest whole number or even number, but for ribbing and cables, always manually check that the result is compatible with your stitch pattern repeat.
Tips for Accurate Knitting Gauge
Cast on at least 30 stitches and knit at least 30 rows for your swatch — a larger swatch gives a more accurate gauge measurement. After knitting, wash and block the swatch the same way you plan to wash the finished project, as yarn can shrink, grow, or change texture after washing. Measure the gauge in the centre of the swatch, not near the edges. Measure at least three different spots and take the average. Last updated: March 2026.