Men’s Ring Size Chart and Average Men’s Ring Size

Quick answer: The average men’s ring size in the US is about 9 to 10, and most men fall between 8 and 12. In the UK and Australia that’s roughly R to T. Sizes aren’t gendered, so this is the same scale women use, just the part of it men most often land on.

Men’s Ring Size Chart

This chart covers the range most men’s rings are made in, with the UK/Australia letter, the Japan number, and the exact inside diameter and circumference in millimeters.

US size	UK / AU	Japan	Inside diameter	Inside circumference
7	N	14	17.3 mm	54.4 mm
7.5	O	15	17.7 mm	55.7 mm
8	P	17	18.1 mm	57.0 mm
8.5	Q	18	18.5 mm	58.3 mm
9	R	19	18.9 mm	59.5 mm
9.5	S	20	19.3 mm	60.8 mm
10	T	22	19.7 mm	62.1 mm
10.5	U	23	20.1 mm	63.4 mm
11	V	24	20.5 mm	64.6 mm
11.5	W	26	20.9 mm	65.9 mm
12	X	27	21.3 mm	67.2 mm
12.5	Y	28	21.7 mm	68.5 mm
13	Z	29	22.1 mm	69.7 mm

For sizes outside this range, see our full US ring size chart or our extra large and petite ring sizes guide.

What Is the Average Men’s Ring Size?

Jewelers put the average US men’s ring size at 9 to 10. Jeweler’s Touch calls 9 or 10 the widely cited average, with size 10 the safest starting point when you can’t measure. Brilliance names size 10 as the most common men’s size in the US, which is about 19.7 to 19.8 mm across.

The exact peak depends on who you ask: some sources say 9.5, some say 10, and one reports 10.5 as the most purchased size. They’re all describing the same cluster. A size 10 is 62.1 mm around, and a 9 is 59.5 mm.

Sizing system	Typical average	Range most men fall in
US / Canada	9 to 10	8 to 12
UK / Australia	R to T (some sources say S to T, or up to V)	P to X
Japan	19 to 22	17 to 27
EU / ISO	about 59.5 to 62 mm	about 57 to 67 mm

Average Men’s Ring Size in the UK and Australia

UK and Australian jewellers use the same letter scale, and their figures sit around R to T. Holts Gems says the average for men sits between S and T, and Bridebook puts it between T and V. On this site’s chart, US 9 is an R, US 10 is a T, and US 11 is a V.

I couldn’t find a separate Australian survey, so treat the UK figures as the working reference. See our UK ring size chart for every letter.

Are Men’s and Women’s Ring Sizes Different?

No. There’s one scale, and a size 9 is the same physical size whoever wears it. What differs is where people tend to land on it: women’s rings are most commonly 5 to 7, men’s most commonly 8 to 12, and there’s plenty of overlap. Our average ring size for women guide covers the other end of the range.

Why Men’s Rings Often Need Extra Thought

Wider bands. Brilliance reports the average men’s band is about 6 mm wide. Wider bands fit tighter at the same labeled size, so many men go up a quarter to half size. Our wide band sizing guide explains how much.
Larger knuckles. A ring that fits the base of the finger may not clear the knuckle. If so, size to the knuckle and consider a comfort fit.
Hard metals. Tungsten and titanium bands often can’t be resized, so getting the size right first matters more. See our resizing guide.

How to Find His Ring Size

Measure a ring he already wears on the right finger with our existing-ring tool.
Print our free ring sizer. It covers US 3 to 13, so it works for men’s sizing too.
Use the string or paper method from our measuring guide, later in the day when his hands are warm.
If you can’t measure at all, start at 9 to 10 and buy from a jeweler with a clear resizing policy.