Ring Sizer

Find a useful ring-size estimate and keep your favourite sizes in one place. Ring Sizer brings measurement tools, international conversions and a personal size collection to Android.

MEASURE YOUR WAY

Calibrate your display against a physical reference, then match the inside of an existing ring on screen. Use paper-strip and photo-assisted measurement tools, with clear guidance and quality checks to help you review your result.

CONVERT INTERNATIONAL SIZES

Compare six sizing systems and switch between diameter, circumference and ring-size references.

KEEP SIZES CLOSE

Save measurements with notes and favourites, compare saved records, and share size cards or export your collection. The free version stores up to three measurements. Optional Premium subscriptions unlock unlimited saved measurements. Plans and local prices are shown when available through Google Play.

EXPLORE RING STYLES

Browse a curated ring gallery and save designs you like. Optional AI previews let you visualise a selected ring on your own hand photo. These previews require an internet connection and consent to send the selected images to our processing providers. A limited preview allowance applies. AI images are illustrative and do not establish fit, dimensions or an exact product appearance.

DESIGNED FOR EVERYDAY USE

Enjoy light and dark themes, accessible text, support for 33 app languages and control over optional analytics. Your saved sizes and measurement photos stay on your device; only images you choose for AI previews are uploaded for that feature.

Screen and photo measurements are estimates. Display calibration, photo perspective, ring width and sizing conventions can affect the result. Confirm important purchases with a jeweller or physical ring sizer.

Support: [email protected]