You may be able to find your ring size by measuring a ring you own that is a comfortable fit. If not, our guide below is on hand to take the guesswork out of ring shopping.
| US |
UK |
DIAMETER |
DIAMETER |
| 4 |
UK |
15.0 MM |
0.59 IN |
| 4.5 |
UK |
15.3 MM |
0.60 IN |
| 5 |
UK |
15.6 MM |
0.62 IN |
| 5.5 |
UK |
16.2 MM |
0.63 IN |
| 6 |
UK |
16.6 MM |
0.65 IN |
| 6.5 |
UK |
16.9 MM |
0.67 IN |
| 7 |
UK |
17.2 MM |
0.68 IN |
| 7.5 |
UK |
17.7 MM |
0.70 IN |
| 8 |
UK |
18.1 MM |
0.71 IN |
| 8.5 |
UK |
18.5 MM |
0.73 IN |
| US |
DIAMETER |
| 4 |
0.59 IN |
| 4.5 |
0.60 IN |
| 5 |
0.62 IN |
| 5.5 |
0.63 IN |
| 6 |
0.65 IN |
| 6.5 |
0.67 IN |
| 7 |
0.68 IN |
| US |
DIAMETER |
DIAMETER |
| 4 |
15.0 MM |
0.59 IN |
| 4.5 |
15.3 MM |
0.60 IN |
| 5 |
15.6 MM |
0.62 IN |
| 5.5 |
16.2 MM |
0.63 IN |