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.