Ring Size Guide — How to Find Your Perfect Fit
Ring Size Guide
Getting the right ring size is essential — especially for engagement rings and wedding bands. Here are simple methods to find your size before ordering from a partner retailer.
Method 1: Measure an Existing Ring
Place a ring that fits well on a ruler. Measure the inside diameter in millimetres. Use the chart below to find your size.
Common Ring Sizes
| US Size | UK Size | Inside Diameter (mm) |
|---|---|---|
| 5 | J 1/2 | 15.7 |
| 6 | L 1/2 | 16.5 |
| 7 | N 1/2 | 17.3 |
| 8 | P 1/2 | 18.1 |
| 9 | R 1/2 | 19.0 |
| 10 | T 1/2 | 19.8 |
Method 2: String or Paper Strip
- Wrap a thin strip of paper or string around the base of your finger
- Mark where the strip overlaps
- Measure the length in millimetres
- Divide by 3.14 to get the diameter
- Match to the size chart above
Tips
- Measure at the end of the day when fingers are slightly larger
- Measure multiple times for accuracy
- Wide bands (over 6mm) typically need a half-size larger
- Most partner retailers offer free resizing — check their policies
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