Ring Sizer: Size Finder

Ring Sizer helps you measure rings and fingers, compare international ring sizes, and save measurements for future reference.

Use it when shopping for engagement rings, wedding bands, gifts, replacement rings, or resizing.

MEASURE AN EXISTING RING

Place a ring on your screen and adjust the circle until it matches the ring’s inner edge. The app displays the estimated diameter, circumference, and corresponding ring size.

MEASURE YOUR FINGER

Use the finger-width guide and slider to estimate the size that best fits your finger.

CONVERT INTERNATIONAL RING SIZES

Compare ring measurements across commonly used sizing systems, including:

• US and Canada
• UK and Australia
• EU and ISO
• Japan and China

SAVE YOUR MEASUREMENTS

Save each result with a custom name, hand, and finger label. Build a personal collection of ring sizes for yourself, family members, or gift recipients.

KEY FEATURES

• On-screen ring size finder
• Fine adjustment steps
• Finger-width measurement guide
• Ring size chart and converter
• Diameter and circumference in millimeters
• International ring size comparisons
• Save and organize measurements
• Add custom names, hand, and finger labels
• Simple and easy-to-use interface

HOW TO USE

1. Choose Ring Sizer or Finger Sizer.
2. Adjust the guide until it matches your ring or finger.
3. Review the estimated measurement and international size.
4. Save the result for future reference.
5. Use the converter when shopping in another sizing system.

Measurement accuracy can vary depending on screen calibration, device size, ring shape, and how the measurement is performed. For expensive, custom-made, or important jewelry purchases, confirm the size with a professional jeweler.