Choosing the right wedding ring size matters as much as choosing the design. A ring that is too tight will feel uncomfortable within hours, while a loose ring risks slipping off during the ceremony or afterward. Use the chart below to find your exact wedding ring size and convert it across US, UK, and EU sizing systems.
This chart shows wedding ring sizes in diameter, circumference, and their equivalents across US, UK, and EU standards.
| US Size | UK Size | EU Size | Diameter (mm) | Circumference (mm) | Circumference (cm) | Circumference (inches) |
|---|---|---|---|---|---|---|
| 4 | H½ | 46.8 | 14.9 | 46.8 | 4.68 | 1.84 |
| 4.5 | I½ | 47.8 | 15.3 | 48.0 | 4.80 | 1.89 |
| 5 | J½ | 49.3 | 15.7 | 49.3 | 4.93 | 1.94 |
| 5.5 | K½ | 50.6 | 16.1 | 50.6 | 5.06 | 1.99 |
| 6 | L½ | 51.9 | 16.5 | 51.9 | 5.19 | 2.04 |
| 6.5 | M½ | 53.1 | 16.9 | 53.1 | 5.31 | 2.09 |
| 7 | N½ | 54.4 | 17.3 | 54.4 | 5.44 | 2.14 |
| 7.5 | O½ | 55.7 | 17.7 | 55.7 | 5.57 | 2.19 |
| 8 | P½ | 57.0 | 18.1 | 57.0 | 5.70 | 2.24 |
| 8.5 | Q½ | 58.3 | 18.5 | 58.3 | 5.83 | 2.29 |
| 9 | R½ | 59.5 | 19.0 | 59.5 | 5.95 | 2.34 |
| 9.5 | S½ | 60.8 | 19.4 | 60.8 | 6.08 | 2.39 |
| 10 | T½ | 62.1 | 19.8 | 62.1 | 6.21 | 2.45 |
| 10.5 | U½ | 63.4 | 20.2 | 63.4 | 6.34 | 2.50 |
| 11 | V½ | 64.6 | 20.6 | 64.6 | 6.46 | 2.54 |
| 11.5 | W½ | 65.9 | 21.0 | 65.9 | 6.59 | 2.59 |
| 12 | X½ | 67.2 | 21.4 | 67.2 | 6.72 | 2.65 |
If your measurement falls between two rows, round up rather than down. Wedding bands are worn daily, so a slightly looser fit is usually more comfortable than one that feels tight by the end of the day.
Men typically wear a larger wedding band than women, most commonly falling between US size 8 and 12, though finger size varies from person to person just as much as height or shoe size does. A size 9 wedding ring uses the exact same measurement standard for men and women, since ring sizing itself is not gender specific.
The bigger difference between men’s and women’s wedding bands usually comes down to width rather than size number. Men’s bands are commonly 6mm to 9mm wide, while women’s bands typically range from 2mm to 4mm. Wider bands tend to sit tighter on the finger, so many men choose a size slightly larger than their true
Women’s wedding rings most commonly fall between US size 5 and 7, though this can vary widely depending on hand size and whether the band will be worn alone or stacked with an engagement ring. If you plan to wear your wedding band next to an engagement ring, it is worth trying both together before finalizing your size, since stacking two rings can change how snug the fit feels.
Yes. The UK uses a letter based sizing system that runs from A to Z, with half sizes shown as A½, B½, C½, and so on. This same letter system is also used in Ireland and Australia. If you are ordering a wedding ring from a UK based jeweler, simply match your US size against the UK column in the chart above to find the correct letter size.
For the most reliable result, measure your finger in the evening when it is at its largest, and avoid measuring right after exercise or exposure to cold, since both can temporarily change finger size.
Most men wear a wedding ring between US size 8 and 12, with size 9 to 10 being especially common.
Most women wear a wedding ring between US size 5 and 7.
A wedding band is worn every day, so it should fit comfortably without being tight. Many people prefer a slightly looser fit compared to occasional jewelry, as long as it does not slide off easily.
No. Both use the same size chart and measurement standard. The difference in typical size comes from finger size, not from separate scales.
Simple metal bands without stones can usually be resized by a jeweler. Bands with eternity stones, engraving, or a fused design may be harder to resize, so getting the size right before the wedding is the safer approach.
Wider bands, especially those over 6mm, tend to feel tighter than thinner bands at the same size. Many jewelers recommend going up half a size for wider styles.
Finger size can change over time due to weight changes, temperature, or age. Most wedding bands can be resized later by a professional jeweler if needed.
