Ring Size Guide

Use one of the methods below to find the correct ring size — either measure an existing ring or measure your finger directly.

Method 1 — Measure an existing ring

1. Use a ring that fits the finger you want a ring for.
2. Measure the internal diameter in millimetres (mm). Use a ruler starting at the 0mm mark.
3. Match the diameter to the chart below.

Ring Size Chart (Internal Diameter → Size)

Internal Diameter (mm)	US/CAN	UK/AUS	German
14.1	3	F	14
14.5	3.5	G	14.5
14.9	4	H 1/2	15
15.3	4.5	I 1/2	15.25
15.7	5	J 1/2	15.75
16.1	5.5	K 1/2	16
16.5	6	L 1/2	16.5
17.3	7	O	17.25
18.1	8	Q	18
19.0	9	S	19
20.6	11	W	20.5
22.2	13	Z 1	22.25

Method 2 — Measure your finger

1. Wrap a thin strip of paper around your finger and mark where it overlaps.
2. Measure the length in millimetres — that’s your circumference. Compare to standard charts (circumference → size).

Tip: Measure at the end of the day when your fingers are a bit larger; measure more than once to be sure.