Ring Sizer
Measure an existing ring

1. Select an existing ring that fits the desired finger.

2. Measure the internal diameter of the ring (in mm).

3. Use the below chart to determine your ring size.

INTERNAL DIAMETER (MM) 14.1 14.9 15.7 16.5 17.3 18.1 19.0 19.8 20.6 21.4 22.2
US/CANADA RING SIZE 3 4 5 6 7 8 9 10 11 12 13
UK/AUSTRALIA RING SIZE F H J L N P R T V X Z
EU RING SIZE 44 47 49 51 54 56 59 61 64 67 69

INTERNAL DIAMETER (MM) US/ CANADA RING SIZE UK/ AUSTRALIA RING SIZE EU RING SIZE
14.1 3 F 44
14.9 4 H 47
15.7 5 J 49
16.5 6 L 51
17.3 7 N 54
18.1 8 P 56
19.0 9 R 59
19.8 10 T 61
20.6 11 V 64
21.4 12 X 67
22.2 13 Z 69

Measure your finger

1. Wrap a strip of paper around your finger where you’d like your ring to be.

2. Make sure that the paper is pulled snug to your finger, the tighter the better, to find your best fit.

3. Mark the spot where the paper meets and measure the distance with a ruler (mm).

4. Use the below chart to determine your ring size.