Free tool
Ring size guide
Indian ring sizes, millimetres, and international equivalents. Print or screen-measure — both work.
How to use
Two ways to measure.
- Use an existing ring. Place a well-fitting ring on the screen and match it to a circle below. The number under that circle is the Indian size.
- Use a thread. Wrap a thread around the base of the finger, mark where it meets, then measure the length in millimetres. Match that number to the Circumference column.
Print this page at 100% scale (no shrink-to-fit) for accurate measurement.
Visual sizer
Match the inside of your ring to a circle.
Full chart
Indian to international.
| Indian | Diameter (mm) | Circumference (mm) | US / UK equivalent |
|---|---|---|---|
| 8 | 15.7 | 49.3 | 5 |
| 9 | 16.1 | 50.6 | 5.5 |
| 10 | 16.5 | 51.9 | 6 |
| 11 | 16.9 | 53.1 | 6.5 |
| 12 | 17.3 | 54.4 | 7 |
| 13 | 17.7 | 55.6 | 7.5 |
| 14 | 18.1 | 56.9 | 8 |
| 15 | 18.5 | 58.1 | 8.5 |
| 16 | 19.0 | 59.5 | 9 |
| 17 | 19.4 | 60.8 | 9.5 |
| 18 | 19.8 | 62.1 | 10 |
| 19 | 20.2 | 63.4 | 10.5 |
| 20 | 20.6 | 64.6 | 11 |
| 21 | 21.0 | 65.9 | 11.5 |
| 22 | 21.4 | 67.2 | 12 |
| 23 | 21.8 | 68.5 | 12.5 |
| 24 | 22.2 | 69.7 | 13 |