Our free Ring Size App is accurate and easy to use
Find out a ring size in UK, EU or USA measurements.
All sizes F - Z included, from smallest to largest finger.
Simply place your loved one's existing ring on your phone screen, and then adjust the circle until it fits the inside of the ring exactly.
This app helps you keep an engagement ring or a special gift a surprise and saves you a trip to the jewellers.
The Diamond Store – Luxury With Confidence
- Bug fixes
Ratings and ReviewsSee All
Compared with different phones
Compared with different phones and the results are inconsistent - iPhone 11 Pro tells me it’s size H, whereby an iPhone 7 indicates it’s size K. Having used various other methods to measure the ring, I know it’s neither H, nor K.
Ring sizes are completely differen
Depending on phone, there is a huge difference. iPhone XS Max gives size N, iPhone XR gives size V
Just used one of my rings on this app that I know the size of, the white sit at its biggest didn't even come close! Proportions are completely wrong. Would not recommend.
Up to six family members will be able to use this app with Family Sharing enabled.