sizing 2

Not sure about your ring size?

A well-fitting ring should resist sliding over the knuckle, yet remove without pain. Sizing can be exacting but we offer clear paths to help you find yours.

For the most accurate fit, visit a jeweler. Try various rings or bring your own. Sizing standards include US, UK/AUS, EU, and Japanese. Always measure the specific finger and do so at a warm temperature, when hands are most natural in size.

Place a well-fitting ring over a ruler, measuring its inner diameter at the widest point. Alternatively, wrap string just below your knuckle, mark, and measure. If between sizes, we suggest choosing the larger one.

Ring sizing example

Ring sizing example
This ring measures 19 mm in inside diameter.

Every order includes our ring sizer. Insert the end through the buckle, tighten it over the knuckle, and slide it to the base. Read the size at the arrow. Unsure? Email a photo to hola@sarjewellery.com for guidance.

Ring sizer example

Alternatively, you can print our guide to explore more methods for finding your ring size at home.

Download Size Guide (PDF)

*I.D. – Internal Diameter
*I.CIRC. – Internal Circumference

I.D. MM* I.C. MM* US UK / AUS JAPAN FRENCH GERMAN
15.6 49.01 5 J½ 9 50½ 16½
15.8 49.64 5¼ K 10 51 16¾
16.0 50.27 5½ K½ 10½ 52 17
16.2 50.91 5¾ L 11 52½ 17¼
16.4 51.55 6 L½ 12 53 17½
16.6 52.18 6¼ M 12½ 54 17¾
16.8 52.81 6½ M½ 13 54½ 18
17.0 53.44 6¾ N 14 55 18¼
17.2 54.08 7 N½ 14½ 55½ 18½
17.4 54.72 7¼ O 15 56 18¾
17.6 55.35 7½ O½ 16 57 19
17.8 55.99 7¾ P 16½ 58 19¼
18.0 56.63 8 P½ 17 58½ 19½
18.2 57.26 8¼ Q 18 59 19¾
18.4 57.89 8½ Q½ 18½ 60 20
18.6 58.52 8¾ R 19 61 20¼
18.8 59.15 9 R½ 20 61½ 20½
19.0 59.78 9¼ S 20½ 62 20¾
19.2 60.42 9½ S½ 21 63 21
19.4 61.06 9¾ T 22 64 21¼
19.6 61.69 10 T½ 22½ 64½ 21½
19.8 62.33 10¼ U 23 65 21¾
20.0 62.96 10½ U½ 24 66 22
20.2 63.60 10¾ V 24½ 66½ 22¼
20.4 64.24 11 V½ 25 67 22½
20.6 64.88 11¼ W 26 68 22¾
20.8 65.50 11½ W½ 26½ 68½ 23
21.0 66.13 11¾ X 27 69 23¼
21.2 66.77 12 X½ 28 70 23½