Jewellery Sizing Guide

📏 UK Ring Size Chart

UK Size Diameter (mm) Circumference (mm)
J 15.5 48.7
K 15.9 50.0
L 16.3 51.2
M 16.7 52.5
N 17.1 53.8
O 17.5 55.0
P 17.9 56.3
Q 18.3 57.6
R 18.7 58.9
S 19.1 60.2
T 19.5 61.4

✨ How to Measure Your Ring Size at Home

Option 1: Measure a Ring You Already Own

  1. Take a ring that fits the desired finger
  2. Measure the inside diameter (straight across the centre) in mm
  3. Match it to the chart above

👉 Tip: Measure across the widest part inside the ring


Option 2: Measure Your Finger

  1. Wrap a thin strip of paper or string around your finger
  2. Mark where it overlaps
  3. Measure the length in mm
  4. Use the circumference column to find your size

💡 Top Tips for the Best Fit

  • Measure your finger at the end of the day (fingers can swell)
  • Avoid measuring when your hands are cold
  • If you’re between sizes, we recommend going slightly larger
  • Wider bands may feel tighter, consider sizing up