How to measure ring size

Find Your Perfect Ring Size

Use our simple ring size guide to find your exact fit. Whether you’re measuring at home or converting sizes, we’ve made it easy to get it right first time.

How to Measure Your Ring Size at Home

Method 1: String or Paper

Wrap a strip around your finger, mark where it overlaps, and measure the length in mm.

Method 2: Existing Ring

Measure the inside diameter of a ring that already fits you.

Method 3: Printable Guide

Print a sizing guide and match your ring to the closest circle.
Download your sizing guide here.

Ring Size Conversion Chart

Diameter (mm)	US	UK	European
14	3	F	44
14.6	3.75	H	46
15.3	4.5	H1/2 - I1/2	48
15.6	4.75	J	49
16	5	J-K	50
16.2	5.5	K-L	51
16.5	6	L - L1/2	52
16.9	6.5	M	53
17.2	7	N	54
17.5	7.25	O	55
17.8	7.5	O - P	56
18.1	8	P	57
18.5	8.5	P1/2 - Q1/2	58
18.8	8.75	R	59
19	9	R1/2 - S	60
19.8	10	T1/2	62
20.4	10.5	V	64

Circumference (mm)	US	UK	European
44	3	F	44
46	3.75	H	46
48	4.5	H1/2 - I1/2	48
50	5	J - K	50
51	5.5	K-L	51
52	6	L - L1/2	52
53	6.5	M	53
54	7	N	54
55	7.25	O	55
56	7.5	O - P	56
57	8	P	57
58	8.5	P1/2 - Q1/2	58
59	8.75	R	59
60	9	R1/2 - S	60
62	10	T1/2	62
64	10.5	V	64