How to calculate it
Target stitches = width × stitches per 4 inches ÷ 4. Subtract the edge stitches, round the remaining count up to a whole multiple of the repeat, then add the edge stitches back.
Worked example
A 20 in piece at 18 stitches per 4 in needs about 90 stitches. With a 2-stitch repeat and 2 edge stitches, cast on 90.
Before you cut or buy
- Measure a blocked swatch in the actual stitch pattern. Ribbing can pull in more than stockinette.
- If exact width matters, compare the rounded cast-on count with the target and swatch again.
Common questions
How do I cast on for a stitch multiple plus edge stitches?
Enter the repeat multiple and any extra edge stitches separately. The calculator rounds the interior count upward to a whole repeat and adds the edges back.
Does ribbing use the same gauge as stockinette?
Often it does not. Swatch in the stitch pattern used for the section you are sizing and measure it after blocking. Recalculate if the pattern changes fabric significantly.
Use your own measured materials and pattern instructions. Estimates cannot account for every variation in technique, shrinkage or layout.