Ribbing Calculator
Calculate the right cast-on count for any ribbing pattern and get written row instructions.
Typical Ribbing Lengths
| Application | Typical Length | Approx. Rows (at 7 rows/in) |
|---|---|---|
| Cuffs | 1.5 – 2 inches | 10 – 14 rows |
| Hem / Body bottom | 2 – 3 inches | 14 – 21 rows |
| Neckband | 0.75 – 1 inch | 5 – 7 rows |
| Hat brim | 1 – 2 inches | 7 – 14 rows |
How to use
- Enter the desired width and your gauge from a stockinette/main stitch swatch.
- Select your ribbing pattern — the calculator adjusts the stitch count to fit the repeat.
- The result shows a written row instruction for both RS and WS rows.
- Ribbing is usually worked on needles one size smaller than the main fabric for a neater, tighter rib.
Ribbing pulls in narrower than stockinette. The actual finished width of a ribbed section can be 10–20% narrower than the calculated width when relaxed.
About this Ribbing Calculator
Use this free Ribbing Calculator to get quick, accurate results directly in your browser. It is designed for everyday use with no signup, no downloads, and no account required. No signup is required, and the tool works on phones, tablets, and desktop browsers.