Ring Size Guide: How to Measure Ring Size at Home

Why Ring Sizing Matters

Getting the right ring size is crucial for comfort and security. A ring that's too tight can be painful, while one that's too loose risks falling off. International sizing adds complexity — a US size 7 is a UK O and EU 54.

How to Measure Ring Size at Home

1. Wrap a string around the base of your finger
2. Mark where the string overlaps
3. Measure the length in millimeters
4. Divide by 3.14 to get the diameter
5. Use our converter to find your size in any system

International Ring Size Systems

• US/Canada: Numeric scale (4-13)
• UK/Australia: Letter scale (H-Z)
• EU: Circumference in mm (46-70)