Find Your Fit
Ring Size Guide
Method 1: Measure a Ring
- 1. Find a ring that fits your finger well.
- 2. Place the ring on a ruler and measure the inside diameter in millimetres.
- 3. Compare your measurement to the size chart below.
Method 2: String Method
- 1. Wrap a thin strip of paper or string around your finger.
- 2. Mark where the paper meets and measure the length in mm.
- 3. Divide by 3.14 to get the diameter, then compare to the chart.
International Size Conversion Chart
| UK Size | US Size | EU Size | Diameter (mm) |
|---|---|---|---|
| F | 3 | 46 | 14.7mm |
| G | 3.5 | 47 | 15.1mm |
| H | 4 | 47.5 | 15.3mm |
| I | 4.25 | 48 | 15.5mm |
| J | 4.5 | 49 | 15.7mm |
| K | 5 | 50 | 16.1mm |
| L | 5.5 | 51 | 16.5mm |
| M | 6 | 52 | 16.9mm |
| N | 6.5 | 53 | 17.3mm |
| O | 7 | 54 | 17.7mm |
| P | 7.5 | 56 | 18.1mm |
| Q | 8 | 57 | 18.5mm |
| R | 8.5 | 58 | 18.9mm |
| S | 9 | 59 | 19.4mm |
| T | 9.5 | 60 | 19.8mm |
| U | 10 | 62 | 20.2mm |
| V | 10.5 | 63 | 20.6mm |
| W | 11 | 64 | 21.0mm |
Not sure of your size? Order our free ring sizer by post or visit our London boutique for a professional fitting.