Ring Size Converter
Convert between different ring size systems easily
Ring Size Converter
Convert between international ring sizing systems with precision
Ready to Convert
Select your ring size and target system to see the instant conversion
Compare Ring Sizes Visually
Use our visual comparison tool to see the actual size of different ring measurements on your screen.
How to Use the Ring Size Converter
Our ring size converter allows you to easily convert between different sizing systems used around the world. Whether you know your size in US, UK, EU, or any other system, you can quickly find the equivalent in another system.
Four Ways to Convert:
- By Size: If you already know your ring size in one system, select that system and size, then choose which system you want to convert to.
- By Diameter: If you have measured the inner diameter of a ring, enter the measurement (in mm or inches) and select the system you want to convert to.
- By Circumference: If you have measured your finger circumference with string or paper, enter the measurement (in mm or inches) and select the system you want to convert to.
- Visual Comparison: Use our visual comparison tool to compare ring sizes on your screen. Calibrate with a credit card for accurate physical sizing, then place your existing ring on the screen to find the matching size.
For the most accurate results, we recommend measuring your finger at the end of the day when your fingers are at their largest. If you are between sizes, it is usually better to choose the larger size.
Frequently Asked Questions
Measurement Questions
There are several methods to measure your ring size: 1) Use a ring sizer at a jewelry store, 2) Measure a ring that fits well using our ring size chart, 3) Use a string or paper strip to measure your finger circumference.
Conversion Questions
You can use our ring size converter tool to convert your ring size to millimeters. Simply select your current size system, enter your size, and choose 'diameter' or 'circumference' in millimeters for the conversion.