How to Find Your Ring Size?
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We’ve prepared a comprehensive guide to help you determine your ring size, match it to your finger, and make the entire ring-buying process as simple and accurate as possible.
Note: There’s always a chance the size you measure won’t be 100% accurate for the ring you need. Don’t worry—our team has you covered! We offer post-purchase support, including free resizing services as part of our jewelry warranty.
Methods to Find Your Ring Size
1. Using a Ring Sizer App
Measuring your ring size with a dedicated mobile app is quick and convenient, and we highly recommend it. Download the appropriate app:
Once installed:
- Place a ring you already own on your phone’s screen.
- Adjust the circle displayed to match the inside of your ring.
- The app will show your ring size!
2. Using a Ruler
Place a ring you own on a ruler and measure its inner diameter in millimeters.
Important: Each finger may have a different size. Be sure to measure the specific finger for which the ring is intended.
3. Using a Measuring Tape
Wrap a soft measuring tape (or string) around your finger to measure the circumference in millimeters. Then match the result with the chart below.
Tip: If using a string, mark it and lay it flat on a ruler for the exact length.
⚠️ Eternity Rings
Due to their unique design, eternity rings cannot be resized. Please measure accurately before purchasing one.
Ring Size Conversion Chart
| Inner Diameter inches / mm |
Circumference inches / mm |
USA & Canada | Ireland / UK / AU / NZ | Japan & China |
|---|---|---|---|---|
| 0.586 / 14.884 | 1.850 / 47 | 4 | H | 7 |
| 0.602 / 15.291 | 1.890 / 48 | 4.5 | I | 8 |
| 0.619 / 15.723 | 1.929 / 49 | 5 | J | 9 |
| 0.635 / 16.129 | 1.969 / 50 | 5.5 | K | 10 |
| 0.652 / 16.561 | 2.047 / 52 | 6 | L | 11 |
| 0.668 / 16.967 | 2.087 / 53 | 6.5 | M | 12 |
| 0.685 / 17.299 | 2.126 / 54 | 7 | N | 13 |
| 0.701 / 17.805 | 2.165 / 55 | 7.5 | O | 14 |
| 0.717 / 18.212 | 2.244 / 57 | 8 | P | 15 |
| 0.734 / 18.644 | 2.283 / 58 | 8.5 | Q | 16 |
| 0.750 / 19.084 | 2.322 / 59 | 9 | R | 17 |
| 0.766 / 19.461 | 2.362 / 60 | 9.5 | S | 18 |
| 0.783 / 19.892 | 2.401 / 61 | 10 | T | 19 |
| 0.799 / 20.224 | 2.440 / 62 | 10.5 | U | 20 |
| 0.815 / 20.655 | 2.480 / 63 | 11 | V | 21 |
| 0.832 / 21.061 | 2.559 / 65 | 11.5 | W | 22 |
| 0.848 / 21.463 | 2.598 / 66 | 12 | X | 23 |
| 0.865 / 21.971 | 2.638 / 67 | 12.5 | Y | 24 |
| 0.881 / 22.383 | 2.677 / 68 | 13 | Z | 25 |