Are mens and womens ring sizes the same? Yes. A size 9 ring has the same inside measurement whether it is sold as a men’s ring or a women’s ring. What differs is the typical size people wear and the width of the band, which changes how a ring feels. This guide explains it simply, with a quick chart and tips for buying a ring for someone else.
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In the United States and Canada, ring sizes run on one numeric scale for everyone. Each full size adds about 0.8 mm to the inside diameter. A size 7 is a size 7, no matter who wears it or which section of the shop it comes from.
So are men and women ring sizes the same? On paper, completely. In real life, men simply tend to wear larger sizes because their fingers are usually wider.
Most women wear between US size 5 and 8, with 6 to 7 being very common. Most men wear between US size 8 and 12, with 9 to 10 being typical. These are averages, not rules, and many people sit outside them.
The bigger difference in a mens vs womens ring size is often band width. Men’s rings are usually wider, and a wide band covers more of the finger, so it can feel tighter than a slim band in the same size.
| US Size | Inside Diameter and Typical Wearer |
|---|---|
| Size 6 | 16.5 mm inside diameter, common for women |
| Size 7 | 17.3 mm, very common for women |
| Size 8 | 18.2 mm, smaller end for men |
| Size 9 | 19.0 mm, very common for men |
| Size 10 | 19.8 mm, common for men |
Use this ring size chart as a guide. Measure the finger itself for the most accurate answer.
Because the scale is shared, there is no real mens to womens ring size conversion to do. If you need to convert women’s ring size to men’s, the number stays the same.
A common question is what is a women’s ring size 9 in men’s. The answer is simply a men’s size 9. The only thing to think about is the width: if the new ring is much wider, consider going up a quarter or half size.
A slim band of 2 to 4 mm slides over the knuckle easily and sits loosely. A wide band of 6 to 10 mm presses on more skin and feels snugger. Many jewellers suggest going up half a size for bands of 8 mm or more.
Comfort fit bands, which are rounded on the inside, feel a little looser than flat bands. Keep that in mind if you are comparing two rings of the same size.
Get an exact measurement with our guide to measuring ring size at home, read about gemstone rings in 925 silver, or browse our natural gemstone rings shop.
For international size standards and conversions, see the Wikipedia guide to ring sizes.
If you are buying for a partner, borrow a ring they already wear on the same finger and have it measured. If that is not possible, use the averages above and choose a design that can be resized easily.
Now you know the answer to are mens and womens ring sizes the same: yes, the numbers match. Focus on the finger, the band width and the season, and the fit will be right.
Measure at the end of the day when fingers are slightly larger, and avoid measuring when you are very cold. Check the size two or three times on different days.
A jeweller’s mandrel, the tapered metal rod used in shops, is the most reliable way to size a ring you already own. Any local jeweller can check it in seconds.
Make sure the ring slides over the knuckle with a little pressure and does not spin freely once on. That is the sign of a good fit for both men and women.
They use the same scale. Men usually wear larger sizes because their fingers tend to be wider.
Most men wear between US size 9 and 10.
A men’s size 7. The scale is identical.
Often yes. For bands of 8 mm or wider, many people go up half a size.
Yes. The UK uses one letter scale for everyone.
