Momentum Rings — Free Tool
Find Your Ring Size
Use your screen like a ruler. Calibrate with a credit card, then measure your finger — works on any phone or laptop.
Grab a credit card or bank card. Drag the slider until the card on screen matches your real card exactly.
Desktop: Hold your card horizontally against the screen and resize until they match.
Mobile: Hold your card vertically against the screen and resize.
Move the slider to calibrate your screen.
Choose how you want to measure — each method is accurate.
Wrap a thin strip of paper or piece of string snugly around the base of your ring finger. Mark where it overlaps, measure the length in millimetres, then enter it below.
Place an existing ring over the circles below. Calibrate your screen first in Step 1 for accuracy. Click the circle that best matches your ring’s inside diameter.
Measure the inner circumference of an existing ring in millimetres and find your match below.
| AU Size | Circumference | Diameter | US Size | Common Fit |
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We’ll email you your size so you never forget it. Plus a 10% off code for your first order.
Almost There
Enter your details and we’ll send your size to your inbox with a discount code.
Done, ! We’ve sent your size and 10% off code to your inbox. Check your junk folder if you don’t see it within a couple of minutes.