Ring Size Chart: US, UK & EU Converter

Measure your finger with a piece of string or a paper strip, enter the value below, and the converter instantly gives you your US, UK, EU and French ring size.

France / EU

N ½

Diameter

17.3 mm

Ring size conversion chart

Diameter	Circumference	France / EU	US	UK
14.1 mm	44.2 mm	44	3	F
14.5 mm	45.5 mm	45 ½	3 ½	G
14.9 mm	46.8 mm	46 ½	4	H
15.3 mm	48 mm	48	4 ½	I
15.7 mm	49.3 mm	49	5	J ½
16.1 mm	50.6 mm	50 ½	5 ½	K ½
16.5 mm	51.9 mm	52	6	L ½
16.9 mm	53.1 mm	53	6 ½	M ½
17.3 mm	54.4 mm	54	7	N ½
17.7 mm	55.7 mm	55 ½	7 ½	O ½
18.1 mm	57 mm	57	8	P ½
18.5 mm	58.3 mm	58	8 ½	Q ½
18.9 mm	59.5 mm	59 ½	9	R ½
19.4 mm	60.8 mm	61	9 ½	S ½
19.8 mm	62.1 mm	62	10	T ½
20.2 mm	63.4 mm	63	10 ½	U ½
20.6 mm	64.6 mm	64 ½	11	V ½
21 mm	65.9 mm	66	11 ½	W ½
21.4 mm	67.2 mm	67	12	X ½
21.8 mm	68.5 mm	68 ½	12 ½	Y
22.2 mm	69.7 mm	69 ½	13	Z

How to measure your ring size

1.Wrap a thin string or paper strip around the base of your finger, snug but not tight.
2.Mark where it overlaps and measure the length in millimetres — that is your finger circumference.
3.Measure at the end of the day at normal temperature: fingers swell slightly in the morning and in heat.
4.If you fall between two sizes, choose the larger one, especially for a wide band.

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