Screen Ring Sizer

Place a ring you own on your screen to get an exact measurement.

1
Calibrate Screen
2
Measure Ring
3
Your Size

Calibrate Your Screen

Hold a physical credit card against your screen and drag the slider until the outline below matches it exactly.

The standard credit card is 85.60 × 53.98 mm. This step measures your screen's pixel density.
ALIGN CARD HERE85.60 × 53.98 mm
← NarrowerCard = 85.6 mm wideWider →