Ring Sizer - Measure & Try On

Ring Sizer makes finding your perfect ring size fast, accurate, and fun, whether you're shopping for an engagement ring, wedding band, or a gift.

MEASURE ANY RING OR FINGER
• Place a ring on your screen and match the adjustable circle, or use two-point tap for precision
• Measure your finger with the on-screen gauge — just slide to fit
• Use your camera to scan a ring or finger for hands-free sizing
• Auto-calibrated to your device's exact screen PPI for reliable results

BROWSE A CURATED RING GALLERY
• Explore 30 beautifully crafted rings in gold, rose gold, platinum, silver, and more
• Filter by metal type or gemstone, diamond, sapphire, ruby, emerald, morganite, and others
• View each ring up close with detailed descriptions

AI VIRTUAL TRY-ON
• Take a photo of your hand and see any ring from the gallery on your finger
• Powered by AI image generation for photorealistic results
• The easiest way to visualize a ring before you buy

YOUR SIZING VAULT
• Save every measurement with date, method, and notes
• Compare sizes side by side to track changes over time
• Convert instantly between US, UK, EU, JP, CN, and RU ring sizes

BUILT FOR ACCURACY
• Automatic screen calibration with known device PPI data
• Fine-tune calibration manually with a coin or credit card
• Confidence indicator shows how reliable each measurement is
• Ring width adjustment recommends sizing up for wider bands

Ring Sizer is the only ring size app that combines precise measurement tools, an international size converter, a ring gallery, and AI-powered virtual try-on.