This ring size chart is based on our closest conversions. When in doubt, size 1/4 size up for a slightly looser fit and vice versa.
| US/Canada | Inside Diameter (mm) | Inside Circumference (mm) |
|---|---|---|
| 3 | 14.05mm | 44.14mm |
| 3 1/4 | 14.25mm | 44.77mm |
| 3 1/2 | 14.45mm | 45.40mm |
| 3 3/4 | 14.65mm | 46.02mm |
| 4 | 14.86mm | 46.68mm |
| 4 1/4 | 15.04mm | 47.25mm |
| 4 1/2 | 15.27mm | 47.97mm |
| 4 3/4 | 15.53mm | 48.79mm |
| 5 | 15.70mm | 49.32mm |
| 5 1/4 | 15.90mm | 49.95mm |
| 5 1/2 | 16.10mm | 50.58mm |
| 5 3/4 | 16.30mm | 51.21mm |
| 6 | 16.51mm | 51.87mm |
| 6 1/4 | 16.71mm | 52.50mm |
| 6 1/2 | 16.92mm | 53.16mm |
| 6 3/4 | 17.13mm | 53.82mm |
| 7 | 17.35mm | 54.51mm |
| 7 1/4 | 17.45mm | 54.82mm |
| 7 1/2 | 17.75mm | 55.76mm |
| 7 3/4 | 17.97mm | 56.45mm |
| 8 | 18.19mm | 57.15mm |
| 8 1/4 | 18.35mm | 57.65mm |
| 8 1/2 | 18.53mm | 58.21mm |
| 8 3/4 | 18.69mm | 58.72mm |
| 9 | 18.89mm | 59.34mm |
| 9 1/4 | 19.22mm | 60.38mm |
| 9 1/2 | 19.41mm | 60.98mm |
| 9 3/4 | 19.62mm | 61.64mm |
| 10 | 19.84mm | 62.33mm |
| 10 1/4 | 20.02mm | 62.89mm |
| 10 1/2 | 20.20mm | 63.46mm |
| 10 3/4 | 20.44mm | 64.21mm |
| 11 | 20.68mm | 64.97mm |
| 11 1/4 | 20.85mm | 65.50mm |
| 11 1/2 | 21.08mm | 66.22mm |
| 11 3/4 | 21.24mm | 66.73mm |
| 12 | 21.49mm | 67.51mm |
| 12 1/4 | 21.69mm | 68.14mm |
| 12 1/2 | 21.89mm | 68.77mm |
| 12 3/4 | 22.10mm | 69.43mm |
| 13 | 22.33mm | 70.15mm |
Choosing the right size can be tricky, there are some instances where you may have to size up or down. Learn more in our Size Guide Page.
Your cart is currently empty.
Start Shopping
Oval
Round
Pear
Emerald
Cushion
Marquise
Radiant
Trillion
Princess
