Find your perfect fit
Online Ring Sizing Guide
Don't know your ring size? Use one of these two simple methods at home, then find your size in the chart below.
Measure an existing ring
- Select an existing ring that fits the desired finger.
- Measure the internal diameter of the ring (in mm).
- Use the Internal Diameter column in the chart below to determine your ring size.
Measure your finger
- Cut a strip of paper that is approximately 1 cm wide.
- Wrap the strip of paper around your finger where your new ring will be worn.
- Make sure the paper is pulled snug against your finger and mark where it meets.
- Lay the paper flat and measure the distance with a ruler (in mm).
- Use the Circumference column in the chart below to determine your ring size.
Ring size chart
| Internal diameter (mm) | Circumference (mm) | AU/NZ | US/Can |
|---|---|---|---|
| 14.1 | 44.2 | F | 3 |
| 14.5 | 45.55 | G | 3.5 |
| 14.9 | 46.8 | H | 4 |
| 15.3 | 48 | I | 4.5 |
| 15.5 | 49.3 | J | 5 |
| 16 | 50.57 | K | 5.5 |
| 16.5 | 51.9 | L | 6 |
| 16.9 | 53 | M | 6.5 |
| 17.3 | 54.3 | N | 7 |
| 17.7 | 55 | O | 7.5 |
| 18.1 | 57 | P | 8 |
| 18.5 | 58 | Q | 8.5 |
| 19 | 59.5 | R | 9 |
| 19.4 | 60.9 | S | 9.5 |
| 19.8 | 62.1 | T | 10 |
| 20.2 | 63.4 | U | 10.5 |
| 20.6 | 64.7 | V | 11 |
| 21 | 65.9 | W | 11.5 |
| 21.4 | 67.2 | X | 12 |
| 21.6 | 67.8 | Y | 12.25 |
| 21.8 | 68.5 | Z | 12.5 |
Need help?
Our customer service team can help you find the perfect ring size. Either chat with us live or send us an email at hello@matthewsjewellers.com.