Ring Size Chart | Find Your Ring Size

Ring Size Conversion Chart

Ring Size Chart
Inside Diameter		Inside Circumference
(in)	(mm)	(in)	(mm)	US Ring Size	British Ring Size	Japanese Ring Size	Swiss Ring Size
0.458	11.63	1.44	36.5	0
0.466	11.84	1.46	37.2	¼
0.474	12.04	1.49	37.8	½	A
0.482	12.24	1.51	38.5	¾	A½
0.49	12.45	1.54	39.1	1	B	1
0.498	12.65	1.56	39.7	1¼	B½
0.506	12.85	1.59	40.4	1½	C		0.5
0.514	13.06	1.61	41	1¾	C½		1
0.522	13.26	1.64	41.7	2	D	2	1.75
0.53	13.46	1.67	42.3	2¼	D½		2.25
0.538	13.67	1.69	42.9	2½	E	3	3
0.546	13.87	1.72	43.6	2¾	E½		3.5
0.554	14.07	1.74	44.2	3	F	4	4.25
0.562	14.27	1.77	44.8	3¼	F½	5	4.75
0.57	14.48	1.79	45.5	3½	G		5.5
0.578	14.68	1.82	46.1	3¾	G½	6	6
0.586	14.88	1.84	46.8	4	H	7	6.75
0.594	15.09	1.87	47.4	4¼	H½		7.5
0.602	15.29	1.89	48	4½	I	8	8
0.61	15.49	1.92	48.7	4¾	J		8.75
0.618	15.7	1.94	49.3	5	J½	9	9.25
0.626	15.9	1.97	50	5¼	K		10
0.634	16.1	1.99	50.6	5½	K½	10	10.5
0.642	16.31	2.02	51.2	5¾	L		11.25
0.65	16.51	2.04	51.9	6	L½	11	11.75
0.658	16.71	2.07	52.5	6¼	M	12	12.5
0.666	16.92	2.09	53.1	6½	M½	13	13.25
0.674	17.12	2.12	53.8	6¾	N		13.75
0.682	17.32	2.14	54.4	7	N½	14	14.5
0.69	17.53	2.17	55.1	7¼	O		15
0.698	17.73	2.19	55.7	7½	O½	15	15.75
0.706	17.93	2.22	56.3	7¾	P		16.25
0.714	18.14	2.24	57	8	P½	16	17
0.722	18.34	2.27	57.6	8¼	Q		17.5
0.73	18.54	2.29	58.3	8½	Q½	17	18.25
0.738	18.75	2.32	58.9	8¾	R		19
0.746	18.95	2.34	59.5	9	R½	18	19.5
0.754	19.15	2.37	60.2	9¼	S		20.25
0.762	19.35	2.39	60.8	9½	S½	19	20.75
0.77	19.56	2.42	61.4	9¾	T		21.5
0.778	19.76	2.44	62.1	10	T½	20	22
0.786	19.96	2.47	62.7	10¼	U	21	22.75
0.794	20.17	2.49	63.4	10½	U½	22	23.25
0.802	20.37	2.52	64	10¾	V		24
0.81	20.57	2.54	64.6	11	V½	23	24.75
0.818	20.78	2.57	65.3	11¼	W		25.25
0.826	20.98	2.59	65.9	11½	W½	24	26
0.834	21.18	2.62	66.6	11¾	X		26.5
0.842	21.39	2.65	67.2	12	X½	25	27.25
0.85	21.59	2.67	67.8	12¼	Y		27.75
0.858	21.79	2.7	68.5	12½	Z	26	28.5
0.866	22	2.72	69.1	12¾	Z½		29
0.874	22.2	2.75	69.7	13		27	29.75
0.882	22.4	2.77	70.4	13¼	Z1		30.5
0.89	22.61	2.8	71	13½		28	31
0.898	22.81	2.82	71.7	13¾	Z2		31.75
0.906	23.01	2.85	72.3	14	Z3	29	32.25
0.914	23.22	2.87	72.9	14¼			33
0.922	23.42	2.9	73.6	14½	Z4	30	33.5
0.93	23.62	2.92	74.2	14¾			34.25
0.938	23.83	2.95	74.8	15		31	34.75
0.946	24.03	2.97	75.5	15¼			35.5
0.954	24.23	3	76.1	15½		32	36.25
0.962	24.43	3.02	76.8	15¾			36.75
0.97	24.64	3.05	77.4	16		33	37.5

How to Find Your Ring Size

When it comes to buying a ring, you’ll need to know your ring size. Of course, if you’re buying a ring in store you’ll have the opportunity to try a few different rings on to see which one fits the best. However, if you’re buying online then you’ll need to know your exact ring size. Otherwise, how do you plan to purchase a ring that fits? A large amount of people don’t know how to find their ring size and many simply try to guess a size that will fit; this doesn’t work. It’s much better to take the time to correctly find your ring size. So, how is it done?

Finding Your Ring Size

There are a number of different sizes of ring to choose from, ranging from sizes around 3 all the way up to a size 18. Here’s how to find your ring size:

Place a piece of string around the base of your finger; it must not be stretchy. Then mark the point where the string overlaps and note down the length in inches. This length can then be converted into a ring size. For example, 2.9 inches is a size 15.
Using the same method as above, measure the circumference of a ring you already wear a lot. This will help you to find a ring with the same comfort and fit.

There are a lot of different sources of information online, showing how each finger measurement in inches translates into a ring size; it’s just a case of getting an accurate measurement in the first place. Try to avoid measuring your finger too tight or loose.

Incorrectly measuring your ring size could leave you with rings that don’t fit, rings that fit uncomfortably and a lot of hassle with returning items and buying replacements in a different size. That’s why it’s important to know how to find your ring size. All jewellers and companies that sell rings will use a standardised ring size chart. So, once you have found your ring size once you won’t need to do it every time you go to buy a new piece of jewellery, unless you’re planning to wear the specific ring on a different finger.