Rings Size Guide

US Size
Australian Size — Inside circumference
4
H 1/2 — 46.8 mm
4.5
I 1/2 — 48.0 mm
5
J — 49.3 mm
5.5
K 1/2— 50.6 mm
6
L 1/2 — 51.9 mm
6.5
M 1/2 — 53.1 mm
7
N 1/2 — 54.4 mm
7.5
P — 55.7 mm
8
Q — 57.0 mm
8.5
R — 58.3 mm
9
S — 59.5 mm
9.5
T — 60.8 mm
10
U — 62.1 mm
10.5
V — 63.4 mm
11
W — 64.6 mm
11.5
W 3/4 — 65.9 mm
12
Y — 67.2 mm
12.5
Z — 68.5 mm
13
Z+1 — 69.7 mm

Find your fit

Tiffany & Co. uses standard US rings sizes. Refer to our measurement chart or the ruler found in our size guide.

View & download complete guide
Model displaying ring sizes