CarbonstoneUK

FIND YOUR RING SIZE

CARBONSTONEUK · RING SIZE GUIDE

Two easy ways to find your ring size at home — measure a ring that already fits, or measure your finger with a paper strip.

IMPORTANT — PRINT AT 100% / ACTUAL SIZE (do not use “Fit to Page”).
The bar above should measure exactly 50 mm (5 cm). If it does not, adjust your printer scale.

Method 1 — Measure an existing ring

  1. Place a millimetre ruler on a flat surface.
  2. Position a ring that already fits the correct finger over the ruler.
  3. Measure straight across the widest inside edge of the ring.
  4. Note the inside diameter in millimetres and match it to the chart.

Method 2 — Measure your finger

  1. Cut a narrow, straight strip of paper.
  2. Wrap it comfortably around the base of the finger.
  3. Mark where the paper overlaps.
  4. Lay it flat and measure to the mark in millimetres (this is the circumference).

International ring size chart

UK / AUS / NZUS / CanadaEuropeInside ø (mm)Circumference (mm)
F34414.044.0
G3.254514.344.9
H3.754614.746.0
I44715.047.1
J4.54815.348.1
K54915.749.3
L5.55116.150.6
M65216.551.8
N6.55316.953.1
O75417.354.3
P7.55617.755.6
Q85718.156.9
R8.55818.558.1
S96019.059.7
T9.56119.460.9
U106219.862.2
V10.56420.263.5
W116520.664.7
Z126721.467.2

Tips for an accurate fit

CarbonstoneUK · Flat 1, 61A Station Rd, North Harrow, Harrow HA2 7SR · +44 7748 460039 · support@carbonstoneuk.co.uk