Calibrate your screen for ring sizing

Match the guide to a standard card so the ring guide is the right size on your screen.

Calibrate again if you change browser zoom or use a different device.

What calibration changes

It establishes how the on-screen guide should relate to a real card edge on this device. Existing Ring Mode uses that saved relationship to draw its adjustable circle.

What it does not change

Calibration does not change the ring-size chart, choose a size for you, or correct an outer-edge match. It only makes the on-screen diameter guide meaningful on your current display.

When to calibrate again

Recalibrate after changing device, browser zoom, display scale, or pinch scale. The app checks saved display-scale information and pauses Existing Ring Mode when that match is no longer current.

Avoid these mistakes

Keep the card flat, match the selected edge rather than the whole card at once, and save only after the guide and physical edge agree.

Measure an existing ring Read calibration FAQs Accuracy guidance

Screen calibration

Match the card on your screen

Put your card over the guide, then adjust until the edges match.

Lay your card flat and match its long edge to the guide.

Match long edgeUse this when the full card width fits.

Card edge: 85.6 mm

Screen scale: 3.785 px/mm

Status: Not calibrated yet