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Loupe — Hatton Garden, London

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Ring size guide

Find your size.

With a piece of string

  1. Wrap a strip of paper or string around the base of the finger, snug but not tight.
  2. Mark where it overlaps, lay it flat and measure in millimetres.
  3. Enter the length below. Measure at the end of the day — fingers swell.
mm

UK

M

US

6¼

EU

52

Inside Ø

16.5 mm

Between sizes? Choose the larger — we resize free for 30 days.

Ring sizes · UK, US and EU with inside diameter and circumference
UKUSEUInside Ø mmCirc.Circumference mm
H44714.946.8
I4½4815.348.0
J54915.749.3
K5¼5016.150.6
L5¾5116.351.2
M6¼5216.551.8
N6¾5316.953.1
O7¼5517.354.4
P7¾5617.755.7
Q8¼5718.156.9
R8¾5818.558.2
S9¼5918.959.5
T9¾6119.460.8

Free sizer

We post a plastic sizer free in a plain envelope. Ask for one →

Wide bands

Over 4 mm, go up half a size. Wide bands feel tighter.

Knuckles

If the knuckle is larger than the base, size for the knuckle and we’ll add sizing beads.