Skip to content
Counter service

Ring size guide

Top tip: When purchasing wide shank or spinning rings, we recommend sizing up by 1-2 sizes. Additionally, when stacking more than 2 rings, we recommend sizing up 1 size.

US ring sizes with inside diameter and circumference in millimetres
SizeInside diameterCircumference
617.1 mm53.7 mm
718.0 mm56.5 mm
818.8 mm59.1 mm
919.7 mm61.9 mm
1020.3 mm63.8 mm

Circumference is worked out from the diameter (diameter × 3.14).

How to measure your ring size at home

Measure your own ring

Choose a ring that fits the finger you want to measure. Measure across the inside of your ring, note the diameter and use the ring size guide above to determine your size.

Measure your finger

Cut out a small, long piece of paper. Wrap this around your finger and mark the point where it meets itself. Measure this to get the circumference and use the ring size guide above to determine your size.

Browse the catalog