Sizewise: Ring Sizer & Finder

Find your ring size in seconds with just your iPhone.
Lay a ring that fits on the screen, match the circle, done.
No jeweler, no tape, no printable sizer. Free and private.

BUY THE RIGHT SIZE THE FIRST TIME
Resizing costs money and time, and a wrong-size surprise ring spoils the moment. Sizewise reads the inner diameter of any ring and gives you its exact size before you order.

PERFECT FOR
• Engagement rings borrow one of their rings and keep the proposal a secret
• Wedding bands for both of you
• Gifts for birthdays, anniversaries and Valentine's Day
• Ordering rings online from any country

EVERY SIZE YOU SHOP IN
• US / Canada
• UK / Australia
• EU / ISO
• Japan / China
• Inner diameter in millimetres

HOW IT WORKS
1. Place a ring that fits on the circle
2. Pinch or slide to match its inner edge
3. Read your size

PRIVATE BY DESIGN
No account, no ads, no tracking. Works fully offline.

Download Sizewise free and order your next ring with confidence.