Ring Sizing Guide
Catalyst Rings are final sale, so please take a minute to find your size before ordering. If the fit is still wrong, your first size exchange is free, shipping included. Contact us within 7 days of delivery at info@catalyst.club.
Size chart (US sizes)
| US size | Inside diameter | Inside circumference |
|---|---|---|
| 7 | 17.3 mm (0.68 in) | 54.4 mm (2.14 in) |
| 8 | 18.2 mm (0.72 in) | 57.0 mm (2.24 in) |
| 9 | 19.0 mm (0.75 in) | 59.5 mm (2.34 in) |
| 10 | 19.8 mm (0.78 in) | 62.1 mm (2.44 in) |
Currently available in sizes 7 and 10. Sizes 8 and 9 are coming soon.
Two ways to find your size
1. Measure a ring you already own (most accurate). Pick a ring that fits the finger you plan to wear your Catalyst Ring on. Measure straight across the inside of the ring, edge to edge, in millimetres. Match that number to the inside diameter column.
2. Measure your finger. Wrap a thin strip of paper or string snugly around the base of your finger, mark where it overlaps, then lay it flat and measure the length in millimetres. Match that number to the inside circumference column.
Tips for the right fit
- Measure at the end of the day. Fingers are slightly larger in the evening and when warm.
- Check over the knuckle. The ring has to slide over it, so if your knuckle is wide, size for the knuckle.
- Between sizes? Go up. Wider bands feel snugger than thin bands of the same size.
- Measure the finger you'll actually use. Your dominant hand is usually a little larger.
Still not sure? Email info@catalyst.club and we'll help you choose before you order.