Ring Sizer by Jason Withers ‪©‬ 4+

Uniqo Lab.

    • 4.5 • 778 Ratings
    • Free



Handy utility from Jason Withers created to easily find the ring size in the different countries. There are some unique features supported by the app:

- choose metric or imperial units
- choose diameter or circumference
- use visual guides for more precise measuring
- supports sizes of the USA, Australia, United Kingdom, Europe, Japan and China
- easily share your ring size on social networks

Also we have integrated our "Engagement & Wedding Rings" catalogue and Instagram feed from Jason Withers into this app. You can request quotes through the "Enquire by email" function of the app. One of our expert jewellery consultants will then respond to the enquiry and assist you with your query.

What’s New

Version 4.0.4

In this version, we've implemented several improvements:

- Your native language support has been added.
- A new, user-friendly UI has been introduced.
- You can now determine your ring size using three different measurement methods.
- Wedding tips and articles have been added.


Ratings and Reviews

4.5 out of 5
778 Ratings

778 Ratings

LaurynT. ,

Surprisingly accurate!

I’m a the start of my ring search. Went into a shop and was told to get a 3.5 but it felt so snug! Like terrified that it was stuck on my finger in the store snug. Another said the same, stating a 4 would be to big. This app confirmed quarter sizes and measured me a 3.75. It was a good feeling to be validated at the very least. Going to follow my gut and this app and get the quarter size up.

jjjkidz ,

Seems accurate

I wanted to two my kids what size for a mother’s ring. I think the app should clarify where the circle should line up with your ring. Inner circle? Directly under ring? Outer circle? A 1/4 inch is easy to misjudge. If I use inner circle whereas I can barely see the circle (where my finger goes, right?).. I’m a 6. Directly under I’m a 6 1/4... outer 6.5.
I think I’m a 6 🤷🏼‍♀️

Developer Response ,

Yes, you should measure using the inner circle. Use guides for more accurate measurement. And thank you for your review!

iSnuffleupagus ,

Amazing app & amazing accuracy

I was looking to convert my US size to a EU. This app is so simple and intuitive. You can even measure the size of a ring you own on the screen. It also has a chart to that shows the different cuts of stones and setting names. So much more than what I needed! Thank you!

App Privacy

The developer, Uniqo Lab., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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