How to Find Your Perfect Ring Size

August 26, 2025

Choosing the right ring size doesn’t have to be tricky. Here are two simple methods you can use at home to measure your size with confidence.

① Measure an Existing Ring

Pick a ring you already own that fits the finger you’d like to wear your new piece on.
Measure the inside diameter of the ring (in millimeters).
Match your measurement to the chart below to find your size.

Internal Diameter (mm)	US/CAN	UK/AUS	German
14.1 mm	3	F	14
14.5 mm	3.5	G	14.5
14.9 mm	4	H 1/2	15
15.3 mm	4.5	I 1/2	15.25
15.7 mm	5	J 1/2	15 3/4
16.1 mm	5.5	K 1/2	16
16.5 mm	6	L 1/2	16 1/2
16.9 mm	6.5	M 1/2	16.75
17.3 mm	7	O	17 1/4
17.7 mm	7.5	P	17.75
18.1 mm	8	Q	18
18.5 mm	8.5	R	18.5
19.0 mm	9	S	19
19.4 mm	9.5	T	19.5
19.8 mm	10	U	19 3/4
20.2 mm	10.5	V	20.25
20.6 mm	11	W	20 1/2
21.0 mm	11.5	X	21
21.4 mm	12	Y	21 1/2
21.8 mm	12.5	Z	22
22.2 mm	13	Z1	22.25

No ring at hand? No problem. Try this easy paper method:

Cut a thin strip of paper. Wrap it snugly around the finger where you’d like your ring to sit.
Mark the spot where the paper overlaps.
Measure the length in millimeters – this is your finger circumference.
Use the chart below to find your perfect fit.

Circumference (mm)	US/CAN	UK/AUS	German
44.2	3	F	14
45.55	3.5	G	14.5
46.8	4	H 1/2	15
48.07	4.5	I 1/2	15.25
49.3	5	J 1/2	15 3/4
50.56	5.5	K 1/2	16
51.9	6	L 1/2	16 1/2
53.08	6.5	M 1/2	16.75
54.4	7	O	17 1/4
55.6	7.5	P	17.75
57.0	8	Q	18
58.12	8.5	R	18.5
59.5	9	S	19
60.94	9.5	T	19.5
62.1	10	U	19 3/4
63.45	10.5	V	20.25
64.6	11	W	20 1/2
65.97	11.5	X	21
67.2	12	Y	21 1/2
68.49	12.5	Z	22
69.76	13	Z1	22.25

Measure your fingers at the end of the day, when they’re naturally a little larger.
Cold weather can make your fingers shrink by up to half a size – measure when your hands are warm.
Avoid measuring after salty foods or cocktails, as this can cause temporary swelling.

Our Customer Happiness Team is here to help you find your dream fit. Just reach out and we’ll guide you step by step. 💌