How to know your ring size

Step 1

Cut a strip of paper or piece of string to wrap around your finger

Step 2

Wrap it at the base of the finger you would like to measure and mark where it overlaps

Step 3

Measure the piece of paper or string with a ruler and round up to the nearest mm

NEBŌ DIAMONDS

Ring Size Conversion Chart

View the chart below to see how standard US ring sizes map to inside circumference and international sizing systems.

All NEBŌ rings use standard US sizing. Engagement rings, wedding bands, and fashion rings follow the same size format.

Swipe to view more countries

International ring size conversions from US size 3 through US size 13.
Inside Circumference		US, Canada, Mexico	UK, Australia, Ireland, New Zealand, South Africa	Europe / ISO (France)	Germany, Russia, Ukraine, Asia	India, China, Japan, South America, Turkey, Israel	Italy, Spain, Netherlands, Switzerland
IN	MM	US, Canada, Mexico	UK, Australia, Ireland, New Zealand, South Africa	Europe / ISO (France)	Germany, Russia, Ukraine, Asia	India, China, Japan, South America, Turkey, Israel	Italy, Spain, Netherlands, Switzerland
1.74	44.2	3	F	44	14	4	4
1.77	44.8	3.25	F ½	45	14 ¼	—	4 ⅝
1.79	45.5	3.5	G	45.5	14 ½	5	5 ¼
1.82	46.1	3.75	G ½	46	14 ¾	6	5 ⅞
1.84	46.8	4	H	47	15	7	6 ½
1.87	47.4	4.25	H ½	47.5	—	—	7 ⅛
1.89	48	4.5	I	48	15 ¼	8	7 ¾
1.92	48.7	4.75	J	48.5	15 ½	—	8 ⅜
1.94	49.3	5	J ½	49	15 ¾	9	9
1.97	50	5.25	K	50	16	—	9 ⅝
1.99	50.6	5.5	K ½	50.5	16 ¼	10	10 ¼
2.02	51.2	5.75	L	51	—	11	10 ⅞
2.04	51.9	6	L ½	52	16 ½	12	11 ½
2.07	52.5	6.25	M	52.5	16 ¾	—	12 ⅛
2.09	53.1	6.5	M ½	53	17	13	12 ¾
2.12	53.8	6.75	N	54	—	—	13 ⅜
2.14	54.4	7	N ½	54.5	17 ¼	14	14
2.17	55.1	7.25	O	55	17 ½	—	14 ⅝
2.19	55.7	7.5	O ½	56	17 ¾	15	15 ¼
2.22	56.3	7.75	P	56.5	18	—	15 ⅞
2.24	57	8	P ½	57	—	16	16 ½
2.27	57.6	8.25	Q	58	18 ¼	—	17 ⅛
2.29	58.3	8.5	Q ½	58.5	18 ½	17	17 ¾
2.32	58.9	8.75	R	59	18 ¾	—	18 ⅜
2.34	59.5	9	R ½	60	19	18	19
2.37	60.2	9.25	S	60.5	19 ¼	—	19 ⅝
2.39	60.8	9.5	S ½	61	19 ½	19	20 ¼
2.42	61.4	9.75	T	61.5	—	—	20 ⅞
2.44	62.1	10	T ½	62	19 ¾	20	21 ½
2.47	62.7	10.25	U	63	20	21	22 ⅛
2.49	63.4	10.5	U ½	63.5	—	22	22 ¾
2.52	64	10.75	V	64	20 ½	—	23 ⅜
2.54	64.6	11	V ½	65	20 ¾	23	24
2.57	65.3	11.25	W	65.5	—	—	24 ⅝
2.59	65.9	11.5	W ½	66	21	24	25 ¼
2.62	66.6	11.75	X	67	21 ¼	—	25 ⅞
2.65	67.2	12	X ½	67.5	21 ½	25	26 ½
2.68	68.1	12.25	Y	68	—	—	27 ⅛
2.71	68.5	12.5	Z	69	21 ¾	26	27 ¾
2.72	69.1	12.75	Z ½	69.5	—	—	28 ⅜
2.75	69.7	13	—	70	22	27	29

International conversions are approximate. For the most accurate fit, have your finger professionally measured by a jeweler.