Sock Yarn Calculator
Calculate yardage, cast-on stitches, and heel flap count for hand-knit socks.
Standard Sock Size Reference
| Size | Foot Circ. | Foot Length | US Shoe Size |
|---|---|---|---|
| Women's S | 7.5" | 8.5" | 5–6.5 |
| Women's M | 8" | 9" | 7–9 |
| Women's L | 8.5" | 9.5" | 9.5–11 |
| Men's S | 8.5" | 9.5" | 6–8 |
| Men's M | 9" | 10" | 8.5–10.5 |
| Men's L | 9.5" | 11" | 11–13 |
How to Use This Calculator
- Select a size preset or enter custom measurements.
- Enter your gauge in stitches per inch — sock yarn is usually knit at 7–9 sts/inch.
- Click Calculate to get your cast-on count, heel flap stitches, and yardage per sock and per pair.
Tips
- Most sock patterns are knit with negative ease — the foot circumference of the sock should be about ½" less than the actual foot circumference.
- A standard 100g fingering weight skein (400–450 yards) is usually enough for one average women's sock. Two skeins = one pair.
- The heel flap stitch count is typically half the total cast-on stitches.
- Gauge swatch in the round for the most accurate result, as gauge often differs between flat and circular knitting.
About this Sock Yarn Calculator
Use this free Sock Yarn 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.