Measure ring size online
Screen setup Measurement Size determination
Screen setup Measurement Size determination
To correctly determine the size, you need to calibrate your screen resolution.
- place any magnetic card against the image below
- use the buttons
,
or
until the card corners align with the red marks, then press "Apply"

Place card
here
here
Apply
Screen setup Measurement Size determination
Place a ring on the circle below. Use the slider to match the ring diameter to the red circle.
To determine the ring size using your finger, you need to:
- Place your finger on the screen and align it with the dashed silhouette
- Use the + and - buttons until the red lines match your finger, then tap "Apply"
Ring size detection with AI
Show your open palm to the camera
No need to choose left or right hand. The model will detect it automatically. Show your hand to the camera 3 times and we will average the estimate.
Camera is off
Ready to start the camera?
Allow camera access and show your open palm. The model will detect the hand automatically.
Nothing is recorded. We only use the live preview for measurement.
Requesting access
Turning on the camera...
Please allow camera access in your browser to continue.
Place your palm inside the frame
Camera unavailable
We could not start the camera
Check browser permissions or try another device, then try again.
How to allow camera
- Click the camera or site icon in the address bar.
- Open site settings and set Camera to Allow.
- Reload the page and try again.
1
Scan 1
Waiting
2
Scan 2
Waiting
3
Scan 3
Waiting
Wait until the frame turns green. Scan 1 of 3 will be captured automatically.
Back
Find out your size
Tip
Ring sizes on the right and left hand for the same finger may differ.
Tip
The best time to measure is in the evening: fingers swell slightly by evening, giving a more accurate size.
Tip
A wide ring fits tighter than a narrow one. If your ring is wider than 6 mm — go half a size up.
Tip
Fingers swell in heat and shrink in cold. Measure at room temperature.
Tip
If the ring goes over a knuckle — use the knuckle size, not the base of the finger.
We have collected all international sizes and their correspondences in a table