Our Jewelry Sizing Guide makes it easy to choose bracelets, rings, and necklaces with confidence. Explore simple measuring tips, how each style should sit or drape, and what to know before you buy.

Jewelry Sizing Guide

Our Jewelry Sizing Guide makes it easy to choose bracelets, rings, and necklaces with confidence. Explore simple measuring tips, how each style should sit or drape, and what to know before you buy.

Length (in)	Length (cm)
15	38.1
16	40.6
18	45.7
20	50.8
24	61
25	63.5
30	76.2
35	88.9
36	91.4
40	101.6
45	114.3
50	127
60	152.4
70	177.8

How To Choose Necklace Length

Necklace length influences how each it will rest and layers. To preview the fit, cut a piece of string to the length you're considering and place it around your neck to see where it lands. Try a few lengths to find the balance that works best, especially if you plan to layer multiple necklaces.

General Measurements

Men's Sizes	Women's Sizes	Wrist Diameter (in)	Wrist Diameter (cm)
-	X Small	5 - 5.5	12.7 - 14
-	Small	5.5 - 6	14 - 15.2
-	Medium	6 - 6.5	15.2 - 16.5
Small	Large	6.5 - 7	16.5 - 17.8
Medium	X Large	7 - 7.5	17.8 - 19
Large	XX Large	7.5 - 8	19 - 20.3
X Large	XXX Large	8 - 8.5	20.3 - 21.5
XX Large	-	8.5 - 9	21.6 - 22.9
XXX Large	-	9 - 9.5	22.9 - 24.1

Measurements By Brand

Tiffany & Co

Size	Wrist Diameter (in)	Wrist Diameter (cm)
X Small	4.76 - 5.75	12.1 - 13.3
Small	5.76 - 5.75	13.4 - 14.6
Medium	5.78 - 6.75	14.8 - 15.9
Large	6.76 - 6.75	15.9 - 17.1
X Large	6.76 - 7.75	17.7 - 18.4
XX Large	7.76 - 7.75	18.4 - 19.7
XXX Large	7.78 - 8.75	19.7 - 21

David Yurman

Size	Wrist Diameter (in)	Wrist Diameter (cm)
X Small	5.0 - 5.5	13.7 - 14.0
Small	5.5 - 6.0	14.0 - 15.7
Medium	6.0 - 6.5	15.2 - 16.5
Large	6.5 - 7.0	16.5 - 17.8
X Large	7.0 - 7.5	17.8 - 19.0

Cartier

Inches	Centimeters	LOVE	LOVE Unlimited	Juste Un Clou	Trinity	Ecrou de Cartier	All Others
5.1 - 5.4	13 - 13.5	15	14	14	15	15	14
5.5 - 5.8	14 - 14.9	16	15	15	17	16	15
5.9 - 6.2	15 - 15.5	17	16	16	18	17	16
6.3 - 6.6	16 - 16.9	18	17	17	19	18	17
6.7 - 7.0	17 - 17.9	19	18	18	20	19	18
7.1 - 7.4	18 - 18.5	20	19	19	21	20	19
7.5 - 7.8	19 - 19.9	21	20	20	-	21	20
7.9 - 8.2	20 - 20.9	22	21	21	-	22	21

How To Measure Your Wrist

Measure your wrist with a flexible measuring tape or a strip of paper, wrapping it just above the wrist bone. It should be snug, but not tight. Note the measurement and compare it to our size charts to find the best fit.

USA Size	UK Size	Inside Circumference (mm)	Inside Diameter (mm)
1	A½	39.12	12.5
1.25	A¾	39.74	12.7
1.5	B	40.4	12.9
1.75	B¾	41.03	13.1
2	C	41.66	13.3
2.25	C¾	42.27	13.5
2.5	D	42.88	13.7
2.75	D¾	43.57	13.9
3	E	44.73	14.1
3.25	E½	44.89	14.3
3.5	F	45.49	14.5
3.75	F½	46.15	14.7
4	G	46.75	14.9
4.25	G½	47.41	15.1
4.5	H	48.07	15.3
4.75	H½	48.69	15.5
5	I	49.37	15.7
5.25	J	49.95	15.9
5.5	J	50.6	16.1
5.75	J¾	51.28	16.3
6	K	51.9	16.5
6.25	K¾	52.53	16.7
6.5	L	53.1	16.9
6.75	L¾	53.73	17.1
7	M	54.4	17.3
7.25	M¾	55.03	17.5
7.5	N	55.7	17.7
7.75	N¾	56.33	17.9
8	O	57	18.1
8.25	O¾	57.63	18.3
8.5	P	58.3	18.5
8.75	P¾	58.93	18.7
9	Q	59.5	18.9
9.25	Q¾	60.13	19.1
9.5	R	60.8	19.3
9.75	R½	61.43	19.5
10	S	62.1	19.7
10.25	S¾	62.73	19.9
10.5	T	63.4	20.1
10.75	T¾	64.03	20.3
11	U	64.8	20.5
11.25	U¾	65.23	20.7
11.5	V	66.0	20.9
11.75	V¾	66.63	21.1
12	W	67.2	21.3
12.25	W¾	67.83	21.5
12.5	X	68.5	21.7
12.75	X¾	69.13	21.9
13	Y	69.7	22.1
13.25	Y¾	70.33	22.3
13.5	Z	71	22.5

How To Measure Your Ring Size

Wrap a piece of string around the base of your finger.
Mark the point where the ends meet with a pen.
Measure the length with a ruler.
Using the size chart, convert the circumference measurement to the correct size.

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Jewelry Sizing Guide

Jewelry Sizing Guide

How To Choose Necklace Length

General Measurements