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A man uses a sizing kit to determine his Oura Ring size

Sizing

Find your perfect fit

Confirm Your Size

Once you've found your perfect fit, confirm your size below.

Confirm Your Size

Sizing guides

Oura Ring 4

Oura Ring 4 has a new design featuring a round interior with flat sensors for a more comfortable fit. Please follow the guide below to find your perfect fit.

Oura Ring Gen3

Sizing for Oura Ring Gen3 covers both Heritage and Horizon styles. Follow the guide below to find your perfect fit. If upgrading to Oura Ring 4, please follow the Oura Ring 4 sizing guide.