Sizing

Find your perfect fit

Oura Ring 5

Sizing Tip: Your Oura Ring sizing kit will help you select a size that ensures optimal accuracy and comfort day and night.
Step 1: Choose your finger

To achieve optimal performance and accuracy, it is advisable to wear your Oura Ring on your index, middle, or ring finger. Please refrain from wearing it on fingers where the base is narrower than the knuckle to guarantee a secure fit.

Step 2: Test the fit

The sensor bumps located within your sizing ring ought to be positioned on the palm side of your finger. The ring must fit snugly and comfortably around the base of your finger without being excessively tight. While wearing the sizing ring, make a fist. If you notice a gap between the top of your finger and the interior of the ring, consider trying a smaller size.

Confirm your size

Once you're feeling good about the fit, confirm your size below.

Click here

Step 1: Choose your finger
Step 2: Test the fit
Confirm your size

Oura Ring 4

Sizing Tip: Your Oura Ring sizing kit will help you select a size that ensures optimal accuracy and comfort day and night.
Step 1: Choose your finger

The Oura Ring is designed to be worn on any finger. However, for optimal performance, we suggest using the index, middle, or ring finger.

Step 2: Test the fit

Your Oura Ring ought to fit tightly and securely on your finger, yet it should not cause discomfort. Make a fist to verify that there are no spaces between the ring and your finger. When wearing the sizing ring, ensure that the size number is facing upwards on the hand.

Confirm your size

Once you're feeling good about the fit, confirm your size below.

Click here

Step 1: Choose your finger
Step 2: Test the fit
Confirm your size

Watch the Sizing Guide