Ring size 6.5 in millimetres

US ring size 6.5 is 16.92 mm inner diameter and 53.1 mm circumference.

Proportional only — actual on-screen size depends on your display.

50 mm reference

Actual-size print check Inner diameter: 16.92 mm. Print at 100% and verify the 50 mm reference bar before comparing a ring.

This is around the average women’s ring size (US 6–6½). See the full international ring size chart · Converter

Frequently asked questions

What is ring size 6.5 in mm?

US ring size 6.5 has an inner diameter of 16.92 mm and an inner circumference of 53.1 mm.

What is US 6.5 in UK, EU and Japan ring sizes?

US 6.5 converts to UK M½, EU/ISO 53, Japan 13, and Switzerland/Italy/Spain 13.

Is ring size 6.5 small or large?

This is around the average women’s ring size (US 6–6½).