Amigurumi Size Estimator
Estimate finished amigurumi size from your magic ring, or find the ring count for a target size.
Enter your magic ring stitch count, yarn weight, and hook size to estimate finished diameter.
Results are estimates. Finished size varies significantly with hook size, tension, and whether stuffing is used. Always test with your specific yarn and hook.
Common Amigurumi Yarn / Hook Combos
| Yarn Weight | Recommended Hook | Typical Gauge (per 4 rounds) | Approx. Sphere Diameter |
|---|---|---|---|
| Sport (2) | 2.25–3mm | 20–22 sc / 4" | 2–3" (6-st ring) |
| DK (3) | 3–3.5mm | 18–20 sc / 4" | 3–4" (6-st ring) |
| Worsted (4) | 3.5–4mm | 14–16 sc / 4" | 4–5" (6-st ring) |
| Bulky (5) | 5–6mm | 10–12 sc / 4" | 5–7" (6-st ring) |
How to Use This Calculator
Ring → Size
- Enter the number of stitches in your magic ring (commonly 6 or 8).
- Select your yarn weight and enter your hook size in mm.
- Enter how many increase rounds you plan to work (the increases add 6 stitches per round for a 6-stitch ring).
- Click Estimate Size to see the approximate finished diameter.
Size → Ring
- Enter your desired finished diameter in inches.
- Select yarn weight.
- Click Find Ring Count for the recommended starting ring size and number of rounds.