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Ring size converter

Convert ring size between 5 units: India size, US / Canada size, inside circumference (mm), inside diameter (mm), inside diameter (inches) and more. Instant results with formulas. Free, no ads.

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85 converters, 1,947 units

Popular ring size conversions

  • InstantType on either side; the other updates as you type.
  • No ads, no sign-upNothing to install and nothing to buy.
  • Works offlineAfter the first visit it opens without internet.
  • PrivateSaved and recent conversions stay on your device.