Size guide

How to choose your ring size?

  1. Use a ring that fits you perfectly.
  2. Measure the inside diameter with a ruler.
  3. Check the table below to find your RIGIDO size:
Inner diameter (mm) Inner diameter (in) RIGIDO size
14 0.55 4
14.4 0.57 6 (XXS)
14.8 0.58 7
15.2 0.60 8 (XS)
15.6 0.61 10
16 0.63 11
16.5 0.65 12 (S)
16.9 0.67 13
17.3 0.68 14 (M)
17.7 0.70 16 (L)
18.2 0.72 17
18.6 0.73 18 (XL)
19 0.75 20
19.7 0.78 22 (XXL)
Note: If your size is not available, we can make your ring to measure (just contact us).

If you already know your size, you can consult the table below to find the corresponding equivalent:

RIGIDO Size USA Size UK Size EU Size
4 3 F 44
6 3.5 G 1/2 46
7 4 H 1/2 47
8 4.5 I 1/2 48
10 5 K 50
11 5.5 L 51
12 6 L 1/2 52
13 6.5 M 1/2 53
14 7 N 54
16 7.5 P 56
17 8 P 1/2 57
18 8.5 Q 1/2 58
20 9 S 60
22 10 T 1/2 62