Oura Ring Gen3 Sizing Kit
- Estimated Delivery : Up to 10 business days
- Free Shipping & Returns : On all orders
- Free and easy USA returns.
- 30 days return policy.
- OURA RING GEN3 SIZING KIT – The Oura Ring Gen3 Sizing Kit is the ideal way to find the perfect size. It’s a custom sizer that allows for you. and those around you. to find the ideal fit before purchasing
- SIZE BEFORE YOU BUY – Size with Gen3 Sizing Kit prior to purchasing Oura Ring Gen3 (different sizing from Oura Ring 4). For additional details. see From the brand section below.
- NOT STANDARD SIZING — Oura Ring Gen3 Sizing Kit only works to size for Oura Ring Gen3. Gen3 sizes are different from standard ring sizes. Oura Ring Gen3 is available in sizes 6-13. There are no half sizes.
- HOW IT SHOULD FIT – We recommend wearing your ring sizer for at least 24 hours to confirm your best fit. Oura Ring Gen3 should fit securely and comfortably at the base of your finger. Your ring should not rotate as you go about normal daily tasks.
- COMFORT AND ACCURACY — A properly fitting Oura Ring Gen3 will result in the highest data accuracy. comfort. and overall experience
- CHOOSE A FINGER — Oura Ring Gen3 works on all fingers and can be worn on either hand. For optimal accuracy. we recommend wearing your Oura Ring Gen3 on your index finger. Size the exact finger you plan to wear your Oura Ring Gen3 on


Find the right fit
Oura Ring Gen3 sizes are different than standard ring sizes. The Oura Ring Gen3 Sizing Kit is the best way to ensure a comfortable and accurate experience. With a purchase of the sizing kit. you’ll receive a $10 Amazon credit towards your Oura Ring Gen3.
Size Before You Buy

Step 1:
Purchase an Oura Ring Gen3 Sizing Kit and receive a $10 Amazon credit towards your Oura Ring.

Step 2:
Purchase your Oura Ring Gen3. the $10 credit will be automatically applied at checkout.

Step 3:
Slip on your Oura Ring Gen3 and download the Oura App.

Step 4:
New members get the first month of Oura Membership free. then it’s $5.99 per month.

A really smart gift.
The Oura Ring Gen3 Sizing Kit makes the perfect gift for your loved ones who want an Oura Ring Gen3 but you may not know their Oura Ring Gen3 size.
style | Heritage, Horizon, Sizing Kit |
---|---|
color | Black, Brushed Titanium, Gold, Rose Gold, Silver, Stealth, White |
US M | US W | UK | EU |
---|---|---|---|
4 | 5.5 | 3.5 | 36 |
4.5 | 6 | 4 | 36.5 |
5 | 6.5 | 4.5 | 37.5 |
5.5 | 7 | 5 | 38 |
6 | 7.5 | 5.5 | 38.5 |
6.5 | 8 | 6 | 39 |
7 | 8.5 | 6 | 40 |
7.5 | 9 | 6.5 | 40.5 |
8 | 9.5 | 7 | 41 |
8.5 | 10 | 7.5 | 42 |
9 | 10.5 | 8 | 42.5 |
9.5 | 11 | 8.5 | 43 |
10 | 11.5 | 9 | 44 |
10.5 | 12 | 9.5 | 44.5 |
11 | 12.5 | 10 | 45 |
11.5 | 13 | 10.5 | 45.5 |
12 | 13.5 | 11 | 46 |
12.5 | 14 | 11.5 | 47 |
13 | 14.5 | 12 | 47.5 |
14 | 15.5 | 13 | 48.5 |
15 | 16.5 | 14 | 49.5 |