Size Guide
Ring Size Guide – Find Your Perfect Fit | Oliver Morgan
At Oliver Morgan, we want every ring to feel as perfect as it looks. Whether you’re selecting a timeless engagement ring or a special gift, choosing the right size is essential for comfort and confidence. Use our simple guide below to measure your ring size accurately at home.
How to Measure Your Ring Size at Home
Option 1: Measure a Ring You Already Own
- Find a ring that fits the finger you want to size.
- Measure the inner diameter of the ring in millimeters using a ruler or caliper.
- Compare the measurement to our size chart below.
Option 2: Use a Strip of Paper or String
- Wrap a thin strip of paper or string around the base of your finger.
- Mark where the paper or string overlaps with a pen.
- Measure the length of the paper or string in millimeters.
- Use our size chart to find your corresponding ring size based on the circumference.
Tip: Measure your finger at the end of the day when it’s largest, and avoid measuring when your fingers are cold or swollen for the most accurate result.
Ring Size Chart
| UK / Australia Size | US Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| H | 4 | 14.1 | 44.2 |
| I | 4.5 | 14.5 | 45.5 |
| J | 5 | 14.9 | 46.8 |
| K | 5.5 | 15.3 | 48.0 |
| L | 6 | 15.7 | 49.3 |
| M | 6.5 | 16.1 | 50.6 |
| N | 7 | 16.5 | 51.9 |
| O | 7.5 | 16.9 | 53.1 |
| P | 8 | 17.3 | 54.4 |
| Q | 8.5 | 17.7 | 55.7 |
| R | 9 | 18.1 | 57.0 |
Need More Help?
If you’re unsure about your size or want a professional fitting, please contact our customer service team. We’re here to help ensure your Oliver Morgan ring fits perfectly. Additionally, you can always visit your local jeweller who would be happy to help.