Customer care

Ring size guide

Don’t know your ring size? You can find it at home in a few minutes. All our rings use standard US sizing; the chart also gives UK sizes and the measurements in millimeters, which is how EU sizes work.

Two ways to measure

For the most accurate result, we recommend method 1: measure a ring you already own. No ring handy? Measure your finger instead.

Method 1 · most accurate

Measure a ring you already own

Find a ring that already fits your intended finger perfectly.
Get a ruler or tape measure with millimeter (mm) markings.
Measure the inside diameter: lay the ring flat and measure across the inside, from edge to edge. Don’t include the metal band.
Match your size: find that number in the inside diameter column below, or type it into the size finder.

Method 2

Measure your finger

Get your tool: a thin strip of paper, a piece of string, or dental floss.
Wrap it around the base of your finger, just below the knuckle. It should be snug, but not uncomfortably tight.
Mark it: use a pen to mark the spot where the end overlaps.
Measure the length from the start to your mark in millimeters. This is your finger’s circumference: find it in the circumference column below.

Ring size chart

Standard US ring sizes with UK equivalents. Type your measurement into the finder to highlight your size.

Ring sizes: US and UK sizes with the inside diameter and inside circumference in millimeters
US	UK	Inside diametermm	Circumferencemm
4	G½	14.9	46.8
4.5	H½	15.3	48.0
5	J½	15.7	49.3
5.5	K½	16.1	50.6
6	M	16.5	51.9
6.5	N	16.9	53.1
7	O	17.3	54.4
7.5	P	17.7	55.7
8	Q	18.1	57.0
8.5	Q½	18.5	58.3
9	R¾	18.9	59.5
9.5	S½	19.4	60.8
10	T½	19.8	62.1
10.5	U½	20.2	63.4
11	V½	20.6	64.6
11.5	W½	21.0	65.9
12	X½	21.4	67.2
12.5	Y½	21.8	68.5
13	Z½	22.2	69.7

EU sizes are the inside circumference in millimeters, rounded: a 54.4 mm circumference is about EU 54.

Good to know

Measure at the end of the day, when your fingers are warm: they are slightly larger then.
If your knuckle is wider than the base of your finger, choose a size that slides over the knuckle.
Between two sizes? Choose the larger one.