Ringjoy: Ring Sizer & Chart

100% free. No ads. No subscription. No sign-up. Ringjoy finds a ring size in about a minute, with a ring you already love or with nothing but your finger. Made with care for the moments rings are for. MEASURE A RING YOU OWN Rest a ring on the screen and match the glowing circle to its inside edge. Ringjoy is calibrated for your iPhone or iPad, so the circle is true to size. No calibration data for your model? A bank card sets it in seconds. NO RING? MEASURE YOUR FINGER Lay your finger flat between two lines on the screen. Or wrap a string or paper strip around the base of your finger and read its length on the ruler. EVERY COUNTRY’S SIZE, ONE CHART See the size in US & Canada, UK & Australia, Europe, Italy, Spain & Switzerland, the Netherlands, Japan, China, Hong Kong & Taiwan and India, with millimeters inside and around. Between two sizes? Ringjoy tells you which one to order, and why. SIZING A SURPRISE Measuring for someone else? Their sizes stay on their own page, with quiet tips for borrowing a ring without giving the secret away. Next time you open Ringjoy, it’s back to you, so a surprise stays a surprise. CONVERT ANY SIZE Got a size from a jeweler abroad? Change any size and every other one follows. KEEP AND SHARE SIZES Save sizes for the people you love, with the finger each one is for. Email a size to yourself, a partner or a jeweler, or share a card with every conversion. PRIVATE BY DESIGN Sizes stay on your device. No account needed. We never sell your data. Questions or ideas? We’d love to hear from you at hello@ringjoy.app.