Not sure about your ring size? Use one of the simple methods below to measure from home with tools you already have.

Find Your Ring Size by Measuring an Existing Ring

If you already own a ring that fits the intended finger, you can determine your ring size by measuring its diameter:

1. Place the ring on a flat surface.
2. Using a ruler or measuring tape, measure straight across the inside of the ring from edge to edge.
3. Refer to our Ring Diameter (mm) column in the size chart to find the corresponding ring size.

For the most accurate measurement, ensure the ruler is aligned perfectly across the center of the ring.

Find Your Ring Size Using a String or Paper Strip

If you don’t have a ring to measure, you can find your ring size using a piece of string or a thin strip of paper:

1. Wrap the string or paper around the base of the finger where you plan to wear the ring.

2. Make sure it’s snug but not tight—just enough to sit comfortably.

3. Mark the spot where the string or paper overlaps.

4. Lay it flat and measure the length in millimeters using a ruler.

5. Use our size chart to match your measurement to the corresponding ring size in the "Circumference (mm)" column.

Tip: Measure your finger at the end of the day when it's at its largest, and avoid doing it when your hands are cold.

 

 

Circumference (mm)	Diameter (mm)	Ring Size (EU)	Ring Size (UK)	Ring Size (USA)
37.8	12.04	38	A	0.5
39.1	12.45	39	B	1.0
40.4	12.85	40	C	1.5
41.7	13.26	42	D	2.0
42.9	13.67	43	E	2.5
44.2	14.07	44	F	3.0
45.5	14.48	45	G	3.5
46.8	14.88	47	H	4.0
48.0	15.29	48	I	4.5
48.7	15.49	49	J	5.0
50.0	15.9	50	K	5.5
51.2	16.31	51	L	6.0
52.5	16.71	52	M	6.5
53.8	17.12	54	N	7.0
55.1	17.53	55	O	7.5
56.3	17.93	56	P	8.0
57.6	18.34	58	Q	8.5
58.9	18.75	59	R	9.0
60.2	19.15	60	S	9.5
61.4	19.56	61	T	10.0
62.7	19.96	63	U	10.5
64.0	20.37	64	V	11.0
65.3	20.78	65	W	11.5
66.6	21.18	67	X	12.0
67.8	21.59	68	Y	12.5
68.5	21.79	69	Z	13.0