Ring Sizing Guide

How to find out your ring size

Using a sizing tool
If you don’t know your ring size, we do recommend to have your finger measured by a jeweller or at your local jewellery store. Try several rings of the sizing tool on to get a better understanding of which size fits better. You can also measure your fingers on two different days to find out which size fits better.

Using the ring you already have
If you already have the ring that fits you perfectly, it can help you in determining your ring size. This method is especially good if the ring you have and the new ring you've chosen have similar shape. Besides your ring, you will also need a ruler with millimeter scale. Put your ring on a ruler and note the inner diameter of the ring in millimeters - this will be your ring size. For example, the inner diameter of the ring on the photo is 16.5 mm, so the size of the ring is 16.5. 

Using a string
Cut a piece of string. You won't need more that 10 cm. Prepare a sharpie or a marker pen, and a ruler. Wrap the string around the base of your finger. Make sure it's not too tight or too loose. Take a sharpie and mark the string in the place where it overlaps. Once you take the string off your finger, you will have two marks on your string. Using a ruler, measure the length of the marked section of the string. It's length in millimeters is the circumference of your finger. Using the sizing chart below you can find the ring size that corresponds to your measurement

Inner diameter, mm	Inner circumference, mm	Dutch size	French size	UK size	US size
13	41	13	1	C 1/2	1
13.4	42	13.4	2	D 1/2	2
13.7	43	13.7	3	E 1/2	2 1/2
14	44	14	4	F	3
14.3	45	14.3	5	G	3 1/4
14.6	46	14.6	6	G 1/2	3 3/4
15	47	15	7	H 1/2	4
15.3	48	15.3	8	I 1/2	4 1/2
15.6	49	15.6	9	J	5
15.9	50	15.9	10	K	5 1/4
16.2	51	16.2	11	L	5 3/4
16.5	52	16.5	12	L 1/2	6
16.8	53	16.8	13	M 1/2	6 1/2
17.2	54	17.2	14	N 1/2	7
17.5	55	17.5	15	O	7 1/2
17.8	56	17.8	16	P	7 3/4
18.1	57	18.1	17	P 1/2	8
18.4	58	18.4	18	Q 1/2	8 1/2
18.8	59	18.8	19	R	8 3/4
19.1	60	19.1	20	S	9
19.4	61	19.4	21	T	9 1/2
19.7	62	19.7	22	U	10
20	63	20	23	U 1/2	10 1/2
20.3	64	20.3	24	V	10 3/4
20.6	65	20.6	25	W	11
21	66	21	26	X	11 1/2
21.3	67	21.3	27	Y	12
21.6	68	21.6	28	Y 1/2	12 1/2
22	69	22	29	Z 1/2	12 3/4

 

General practical recommendations

- Measure your ring size at normal temperature. Do not measure your fingers when it's cold or hot because your ring size will appear smaller or larger accordingly.

- Keep in mind that the wider is the ring, the tighter it feels. When choosing a ring that is 9-10 mm wide, consider ordering it half-size bigger, when the ring is even wider, consider ordering it one size bigger than you would normally wear for a more comfortable fit. In other words, for example, a 5 mm wide ring, a 10 mm wide ring, and a 15 mm wide ring will all have to be slightly different in size to fit the same finger.

- Remember that the width of your knuckles can affect the ring size, as the ring must slide down the knuckle smoothly without forcing and hurting. Does your knuckle look visibly bigger than the base of your finger? Measure both the base of your finger and the knuckle and choose the size in the middle of these two measurements.

Still need advice on the size? Feel free to contact us.