Ring Size Calibrator & Conversion
Order with confidence with our ring size chart! How? Calibrate your screen with a real object, like a bank card or coin, then match the on-screen circle to your ring’s inner edge. We'll compute the exact inner diameter and map it to EU sizes automatically. Your ring size is shown at the bottom of the page.
Step 1 — Screen calibration
Target: 85.60 mm
Scale: 1.000×
On-screen width: 85.60 mm
Step 2 — Match your ring
Diameter 17.00 mm
Finger circumference 53.41 mm
Your ring size
17 (EU — diameter)
Place a ring flat on your screen and adjust until the outer black circle matches the ring’s inner edge. If between sizes, choose the larger one.
Ring size table
| Ring size EU | Diameter (mm) | Circumference (mm) | Ring size USA |
|---|---|---|---|
| EU sizes here follow inner diameter in mm. Circumference = π × diameter. USA sizes are computed from diameter and rounded to the nearest half size (reference only). | |||
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