Ring Size Guide
How to Find Your Ring Size
Finding the right ring size is easier than you think. Use the methods below to measure at home, then match your measurement to our size chart.
Method 1: Measure an Existing Ring
If you already own a ring that fits well, place it on a ruler and measure the inside diameter in millimetres. Use the chart below to find your size.
Method 2: Measure Your Finger
Wrap a thin strip of paper or a piece of string around the base of your finger. Mark where the paper meets and measure the length in millimetres — this is your circumference. Divide by 3.14 to get your diameter, then match to the chart below.
Pro tips for the best fit: Measure at the end of the day when your fingers are slightly larger. Avoid measuring when you are cold. If you are between sizes, size up.
Ring Size Chart
| US / Canada | UK / Australia | EU | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 5 | J½ | 49 | 15.7 | 49.3 |
| 5.5 | K½ | 51 | 16.1 | 50.6 |
| 6 | L½ | 52 | 16.5 | 51.9 |
| 6.5 | M½ | 54 | 16.9 | 53.1 |
| 7 | N½ | 55 | 17.3 | 54.4 |
| 7.5 | O½ | 57 | 17.7 | 55.7 |
| 8 | P½ | 58 | 18.2 | 57.2 |
| 8.5 | Q½ | 59 | 18.6 | 58.4 |
| 9 | R½ | 61 | 19.0 | 59.7 |
| 9.5 | S½ | 62 | 19.4 | 61.0 |
| 10 | T½ | 63 | 19.8 | 62.2 |
Still Not Sure?
No worries — we are happy to help. Reach out to us at any time and we will guide you to the perfect fit. You can also visit a local jeweller to get professionally sized for free.
All THE ARCIVE rings come in standard US sizing. If you need help converting from another sizing system, just ask.