Men’s ring size guide
Most men wear a US 9–10. Measure properly, account for wide bands, and convert to any system below.
Your size is US 9 (UK R½, EU 60).
Fit confidence Exact table match
Fit confidence 70/100 · Medium 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.
Inner diameter is exact to about ±0.1 mm. String or on-screen methods add roughly ½–1 size of noise, so confirm with a second method before buying an expensive or non-resizable ring.
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 |
Average and common men’s sizes
- Average: US 9–10 (UK R½–T½, EU 60–62).
- Most men: US 8–11 (≈18.1–20.6 mm diameter).
- Wide bands (6 mm+) fit tighter — size up a quarter to half size.
Wide-band size calculator
Estimate the order size for a wider band, then confirm before buying a non-resizable ring.
Frequently asked questions
What is the average men’s ring size?
The most common men’s ring size is US 9 to 10 (UK R½–T½, EU 60–62, about 19–20 mm diameter). Sizes 8 to 11 fit most men.
How should a men’s wedding band fit?
Snug enough that it won’t slip off but loose enough to pass the knuckle. Men’s bands are often wide, which fits tighter — size up a quarter to half size for bands 6 mm and wider.
What size is a size 10 men’s ring in mm?
US 10 is 19.8 mm inner diameter (62.1 mm circumference), UK T½, EU 62.