Find Your Perfect Fit
Getting the right ring size is essential for comfort and security. Use our comprehensive guide to find your perfect fit.
Ring Size Conversion Chart
Use this chart to convert between different sizing systems or match your measurements.
| US/Canada | UK/Australia | EU | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 4 | H | 46.8 | 14.9 | 46.8 |
| 4.5 | I | 47.8 | 15.3 | 47.8 |
| 5 | J | 49.0 | 15.7 | 49.0 |
| 5.5 | K | 50.0 | 16.1 | 50.0 |
| 6 | L | 51.2 | 16.5 | 51.2 |
| 6.5 | M | 52.4 | 16.9 | 52.4 |
| 7 | N | 53.8 | 17.3 | 53.8 |
| 7.5 | O | 54.8 | 17.7 | 54.8 |
| 8 | P | 56.0 | 18.1 | 56.0 |
| 8.5 | Q | 57.2 | 18.5 | 57.2 |
| 9 | R | 58.4 | 18.9 | 58.4 |
| 9.5 | S | 59.6 | 19.4 | 59.6 |
| 10 | T | 60.8 | 19.8 | 60.8 |
| 10.5 | U | 62.0 | 20.2 | 62.0 |
| 11 | V | 63.2 | 20.6 | 63.2 |
| 11.5 | W | 64.4 | 21.0 | 64.4 |
| 12 | X | 65.6 | 21.4 | 65.6 |
How to Measure
String Method
- 1.Cut a piece of string or thin paper strip about 4 inches long
- 2.Wrap it around the base of your finger, just below the knuckle
- 3.Mark where the string overlaps with a pen
- 4.Measure the length in millimeters using a ruler
- 5.Use the circumference column in our size chart to find your size
Make sure the string is snug but can still slide over your knuckle.
Existing Ring Method
- 1.Find a ring that fits the intended finger perfectly
- 2.Place the ring on a ruler
- 3.Measure the inside diameter in millimeters
- 4.Use the diameter column in our size chart to find your size
Measure from the inside edges, not the outside of the ring.
Printable Ring Sizer
- 1.Download our printable ring sizer PDF
- 2.Print at 100% scale (no scaling or fit-to-page)
- 3.Verify accuracy using the test ruler on the printout
- 4.Place your existing ring over the circles to find your size
- 5.Or cut out the paper strip sizer and wrap around your finger
Ensure your printer is set to print at actual size (100%).
Tips for Accurate Sizing
Measure at the Right Time
Fingers swell throughout the day. Measure in the evening when your fingers are at their largest.
Consider the Width
Wider bands (6mm+) fit tighter. If choosing a wide band, consider going up half a size.
Temperature Matters
Cold fingers shrink, warm fingers expand. Measure at room temperature for accuracy.
Measure Multiple Times
Take measurements on different days to ensure consistency.
Band Width Considerations
Important: Band Width Affects Fit
Wider bands fit more snugly because they cover more of your finger. Consider sizing up if you're choosing a wider style.
2-4mm
Delicate
True to size
5-6mm
Classic
Consider +¼ size
7mm+
Wide
Consider +½ size
Still Unsure?
We offer complimentary ring sizers shipped anywhere in Canada. Get an accurate fit before making your purchase.
Need Resizing?
All 6ix of Diamonds rings can be resized once within 30 days of purchase at no charge. Additional resizing is available for a small fee.
Learn more about our resizing policy →