Ring Size Calculator

The ring size calculator measures the ring size on the basis of internal circumference and the diameter of the ring.

How to Measure the Ring Size?

You can measure the ring size by the following two methods:

Find Inside Circumference:

Cut a small strip of paper and roll it in the length and place it in the opening of the ring.
Now use a sharp pencil to mark precisely where the strip overlaps.
Remove the paper strip to find the length of the strip with the ruler.

Measure the Inside Diameter:

Use a vernier caliper to find the inside diameter by entering the collars of the caliper in the ring.
Precisely determine the inside circumference.
Then enter the value in the ring size calculator.

The online cm to ring size converter automatically measures the inside diameter of the ring.

The International Ring Size Chart:

The International ring sizes are measured in Inches, centimeters, and in millimeters. For the ring size equivalents, such as for the US ring size or UK ring size, use the ring chart conversion and find your desired measurements. There can be different sizes yet for the same measurement of the ring. The ring size calculator computes the ring size in the measurements used in various countries around the world.

You can find all the estimated values in the ring size chart in cm,mm, and in inches.The cm to ring size converter present you the values in the most common estimation around the world. Women and mens ring size chart inches and mm variables in different countries.

Inside Diameter		Inside Circumference				Sizes
mm	Inches	mm	Inches	UK & Australia	US & Canada	France	Germany	Japan	Switzerland
11.53	0.454	36.22	1.43	_	0	_	_	_	_
11.95	0.474	36.22	37.54	1.49	A	1/2	_	_	_
12.37	0.487	38.86	1.53	B	0	1	_	_	1
12.78	0.503	36.22	40.15	1.58	C	1 1/2	_	_	_
13.21	0.520	36.22	41.50	1.63	D	2	41 1/2	13 1/2	1 1/2
13.61	0.536	42.76	1.68	E	2 1/2	42 3/4	13 3/4	3	2 3/4
14.05	0.553	44.14	1.74	F	3	44	14	4	4
14.36	0.565	45.11	1.77	G	3 3/8	45 1/4	_	5	5 1/4
14.45	0.569	45.40	1.79	G 1/4	3 1/2	_	14 1/2	_	_
14.56	0.573	45.74	1.80	G 1/2	3 5/8	_	_	6	_
11.53	0.454	36.22	1.43	_	0	_	_	_	_
14.65	0.577	46.02	1.81	H	3 3/4	46 1/2	_	_	6 1/2
14.86	0.454	46.68	1.84	H 1/2	4	_	15	7	_
15.04	0.592	47.25	1.86	I	4 1/4	47 3/4	_	_	7 3/4
15.27	0.601	47.97	1.89	I 1/2	4 1/2	_	15 1/4	8	_
15.40	0.606	48.38	1.90	J	4 5/8	49	15 1/2	_	9
15.70	0.618	49.32	1.94	J 1/2	5	_	15 3/4	9	_
16.00	0.630	50.27	1.98	K 1/2	5 3/8	_	_	10	_
16.10	0.634	50.58	1.99	L	5 1/2	51 3/4	16	_	11 3/4
16.51	0.650	51.87	2.04	M	6	52 3/4	16 1/2	12	12 3/4
16.92	0.666	53.16	2.09	N	6 1/2	54	17	13	14
17.35	0.683	54.51	2.15	O	7	55 1/4	17 1/4	14	15 1/4
17.75	0.699	55.76	2.20	P	7 1/2	56 1/2	17 3/4	15	16 1/2
18.19	0.716	57.15	2.25	Q	8	57 3/4	18	16	17 3/4
18.53	0.729	58.21	2.29	Q 3/4	8 1/2	_	18 1/2	17	_
18.61	0.733	58.47	2.30	R	8 5/8	59	_	_	19
18.89	0.748	59.34	2.35	R 3/4	9	_	19	18	_
19.10	0.752	60.00	2.36	S	9 1/8	60 1/4	_	_	20 1/4
19.41	0.764	60.98	2.40	S 3/4	9 1/2	_	19 1/2	19	_
19.51	0.768	61.29	2.41	T	9 5/8	61 1/2	_	_	21 1/2
19.84	0.781	62.33	2.45	T 1/2	10	_	20	20	_
20.02	0.788	62.89	2.48	U	10 1/4	62 3/4	_	21	22 3/4
20.20	0.797	63.46	2.50	U 1/2	10 1/2	_	20 1/4	22	_
20.32	0.800	63.84	2.51	V	10 5/8	63	_	_	23 3/4
20.68	0.814	64.97	2.56	V 1/2	11	_	20 3/4	23	_
20.76	0.817	65.22	2.57	W	11 1/8	65	_	_	25
21.08	0.830	66.22	2.61	W 3/4	111 1/2	_	21	24	_
21.18	0.834	66.54	2.62	X	11 5/8	66 1/4	_	_	26 1/4
21.49	0.846	67.51	2.66	Y	12	67 1/2	21 1/4	25	27 1/2
21.89	0.862	68.77	2.71	Z	12 1/2	68 3/4	21 3/4	26	28 3/4
22.33	0.879	70.15	2.76	Z+1	13	_	22	27	_

Women and men’s ring size chart in inches and in mm make it easy to find your own ring size.

How Does the Ring Size Calculator Work?

Let us see how the simple interface of our calculator allows us to calculate your ring size in moments.

Input:

Choose the measuring unit and what you want to measure
Enter the inside diameter or circumference
Hit the calculate button

Output:

Circumference of the finger
Diameter of the ring

What is the Average Ring Size for Men?

The average ring size for men is around 8 to 10, it is 64.7 to 69.7 mm. The ring size chart circumference can be used to find the average circumference of the ring in inches and in cm.

References:

From the source of bluenile.com: Diamond Ring, Men’s Ring Size Chart Inches

From the source of realsimple.com: How to Measure Ring Size, Ring size chart male