Ring size 11 in mm, cm, UK and EU

Ring size 11 in the US means a ring 20.6 mm wide inside and 64.6 mm round. The UK calls the same ring V½, Europe 65, Japan 23 and India 25.

Ring size 11 in every system

Ring size 11 in mm, cm, UK and EU: every system
US and Canada	11
UK, Ireland, Australia	V½
Europe (EU)	65
Japan and China	23
India	25
Italy, Spain, Switzerland	25
Across the inside	20.6 mm · 2.06 cm · 0.810 in
Around the inside	64.6 mm · 6.5 cm · 2.54 in

One whole size bigger, US 12, is just under 1 mm wider. All of these numbers are from the standard ring size conversion table.

Check a ring against ring size 11 on your screen

1Match a bank card

The card works like a ruler: nothing on it is read or saved, and a driving licence works too. Only its height counts, so the drawing may run off the edge of a phone. Hold the card flat on the screen, long side across, with its top edge on the drawing's top line. Then move the slider until the drawing's bottom line meets the card's bottom edge.

Optional. Only needed to lay a ring or strip on the screen; typed measurements work without it. Nothing on the card is read or saved.

2Measure

A ring I own My finger Print a sizer

Inside diameter of your ring mm

Lay the ring on the circle, or type the inside diameter if you measured it.

Length of your paper strip mm

Wrap a thin strip of paper around the base of your finger, mark where it overlaps, then measure to the mark.

The circle shows a 17.3 mm ring, drawn for a typical screen.

This size, drawn on your screen

US11

UK V½ · EU 65 · Japan 23 · India 25

20.6 mm (0.81 in) across the inside · 64.6 mm (2.54 in) around

For a wide band (over 4 mm), go up about half a size, to US 11½.

See every size in the ring size chart · Convert a size you already know

Nearby sizes

Too tight or too loose? Try the size one row up or one row down.

Nearby sizes
US and Canada	UK and Australia	Europe (EU)	Inside diameter (mm)	Circumference (mm)
10	T½	62	19.8	62.1
10¼	U	63	20.0	62.7
10½	U½	63	20.2	63.4
10¾	V	64	20.4	64.0
11	V½	65	20.6	64.6
11¼	W	65	20.8	65.3
11½	W½	66	21.0	65.9
11¾	X	67	21.2	66.6
12	X½	67	21.4	67.2

Common questions about ring size 11

How many millimetres is US ring size 11?

It is 20.6 mm wide inside and 64.6 mm round the inside. In inches, the width is 0.81.

How many centimetres is US ring size 11?

Round the inside it is 6.5 cm, and it is 2.06 cm wide.