💍Ring Size Calculator

Find your ring size from inside diameter or circumference, or convert between US, UK/Australia, France/Russia, Germany, Switzerland, and Japan ring sizes.

Prefer to skip the form? Scroll down and Ask AI Instead. Just describe your situation and let AI handle the math for you in seconds.

Mode

Inside Diameter

Diameter Unit

Inside Circumference

Circumference Unit

Convert From

Ring Size (in the selected system)

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