Ring Size Guide
Request a free ring sizerHow to find your ring size
For the most accurate result, we recommend ordering our complimentary ring sizer.
If you need to check your size immediately, the at-home methods below offer a reliable guide.
Method 1 — Measure an existing ring (quick & reliable)
If you already own a ring that fits the correct finger, this is a simple and accurate way to determine your size.
How to measure
- Choose a ring that fits comfortably on the finger where you will wear your Oriseau ring.
- Place the ring on a ruler or flat measuring surface.
- Measure the inside diameter of the ring in millimetres, straight across the centre.
- Match your measurement to the UK size chart below.
Tip: Measure twice and use the average if your readings differ slightly.
Method B — Measure your finger (circumference)
- Wrap a thin strip of paper around the base of your finger (snug, not tight).
- Mark where it overlaps.
- Measure the length in mm (this is your circumference).
- Match to the chart below.
Tip: Measure twice and use the average if your readings differ slightly.
UK Ring Size Chart
| UK size | Inside diameter (mm) | Finger circumference (mm) |
|---|---|---|
| H | 14.88 | 46.80 |
| I | 15.29 | 48.00 |
| J | 15.49 | 48.70 |
| K | 15.90 | 50.00 |
| L | 16.31 | 51.20 |
| M | 16.71 | 52.50 |
| N | 17.12 | 53.80 |
| O | 17.53 | 55.10 |
| P | 17.93 | 56.30 |
| Q | 18.34 | 57.60 |
| R | 18.75 | 58.90 |
| S | 19.15 | 60.20 |
| T | 19.56 | 61.40 |
| U | 19.96 | 62.70 |
| V | 20.37 | 64.00 |
| W | 20.78 | 65.30 |
| X | 21.18 | 66.60 |
