Ring Sizer - Measure Ring Size

Find your exact ring size with confidence. Ring Sizer helps you measure physical rings, measure finger circumference with a guided paper strip, and convert between international sizing standards with ease.

TWO ACCURATE MEASUREMENT METHODS
- Measure Ring: Place an existing ring that fits onto your screen and adjust the guide to match its inside edge. The app instantly calculates inside diameter, circumference, and sizes across global standards.
- Measure Finger: Wrap a thin strip of paper around your finger, mark the overlap, and align the strip against the on-screen measurement ruler.

CALIBRATE FOR PHYSICAL ACCURACY
Every screen has unique pixel dimensions. Calibrate your device display once using a standard payment card or ruler to ensure exact real-world millimetre accuracy.

COMPREHENSIVE INTERNATIONAL SIZE CHART
Easily convert between major sizing standards:
- United States (US)
- United Kingdom & Australia (UK)
- Europe & ISO (EU)
- Japan
- India
Includes 55 standard ring sizes with exact diameter and circumference conversions in millimetres.

SAVE AND ORGANIZE MEASUREMENTS
Keep track of ring sizes for yourself, your partner, family members, or friends. Save measurements with custom names so you always have the right size ready when shopping for engagement rings, wedding bands, or gifts.

SHARE SIZES INSTANTLY
Share measurement results and size breakdowns directly through messaging apps, email, or social media.

PRIVACY FIRST
Your calibration values and saved measurements stay securely on your personal device. Enjoy a clean, elegant ring sizing experience without unnecessary complications.