Men’s ring size guide
A gender label cannot predict an individual ring size. Measure the intended finger and hand, then check the knuckle and band width before ordering.
Your size is US 9 (UK R½, EU 60).
Measurement check Exact table match
Measurement check Standard chart conversion; final fit still depends on band width and knuckle shape. Confirm with a printable or physical sizer before ordering an expensive ring.
- US
- 9
- UK
- R½
- EU / ISO
- 60
- Japan
- 18
- CH / IT / ES
- 20
- Inner diameter, millimetres
- 18.95
- Circ mm
- 59.5
Why this size?
Your input maps to US 9 — UK R½, EU 60, JP 18, Ø 18.95 mm.
Calculated dimensions are rounded chart values, not a measured accuracy guarantee. Ruler placement, print scale, screen calibration and the finger can change the result. Confirm with a physical sizer before ordering.
More options
Choose the fit problem and get the safest next step before resizing, replacing or buying another ring.
Too tight or stuck Too loose or spinning Wide band or comfort-fit Non-resizable or brand ring
| US | UK | EU | JP | CH | Inner diameter, millimetres | Circ mm |
|---|---|---|---|---|---|---|
| 3 | F½ | 44 | 4 | 4 | 14.07 | 44.2 |
| 3.5 | G½ | 45 | 5 | 5 | 14.48 | 45.5 |
| 4 | H½ | 47 | 7 | 7 | 14.88 | 46.8 |
| 4.5 | I½ | 48 | 8 | 8 | 15.29 | 48.0 |
| 5 | J½ | 49 | 9 | 9 | 15.70 | 49.3 |
| 5.5 | K½ | 51 | 10 | 11 | 16.10 | 50.6 |
| 6 | L½ | 52 | 12 | 12 | 16.51 | 51.9 |
| 6.5 | M½ | 53 | 13 | 13 | 16.92 | 53.1 |
| 7 | N½ | 54 | 14 | 14 | 17.32 | 54.4 |
| 7.5 | O½ | 56 | 15 | 16 | 17.73 | 55.7 |
| 8 | P½ | 57 | 16 | 17 | 18.14 | 57.0 |
| 8.5 | Q½ | 58 | 17 | 18 | 18.54 | 58.3 |
| 9 | R½ | 60 | 18 | 20 | 18.95 | 59.5 |
| 9.5 | S½ | 61 | 19 | 21 | 19.35 | 60.8 |
| 10 | T½ | 62 | 20 | 22 | 19.76 | 62.1 |
| 10.5 | U½ | 63 | 22 | 23 | 20.17 | 63.4 |
| 11 | V½ | 65 | 23 | 25 | 20.57 | 64.6 |
| 11.5 | W½ | 66 | 24 | 26 | 20.98 | 65.9 |
| 12 | Y | 67 | 25 | 27 | 21.39 | 67.2 |
| 12.5 | Z | 68 | 26 | 28 | 21.79 | 68.5 |
| 13 | Z½ | 70 | 27 | 30 | 22.20 | 69.7 |
Measure the intended finger
- Measure the exact finger and hand where the ring will be worn.
- Repeat the measurement at a normal room temperature.
- Check that the ring can pass the knuckle and still sit securely at the base.
- Convert the measured diameter or circumference, not a guessed demographic size.
Check band width and fit
Wide bands can feel tighter than narrow bands with the same size label. Try a sample ring with a similar width or use the wide-band advisor, then confirm an expensive or non-resizable ring with a physical sizer.
Frequently asked questions
What is the average men’s ring size?
Ringsizely does not use a population-average dataset to size individuals. Retail ranges are only rough shopping references; measure the exact finger.
How should a wide men’s band fit?
It should pass the knuckle and sit securely without pressure. Test a similar-width sample instead of applying a universal size increase.
What is US size 10 in millimetres?
US 10 has a 19.8 mm inner diameter and 62.1 mm circumference; it maps to UK T½ and EU 62.