Ring Sizer vs RingFit Gauge

Find your ring size in seconds — no trip to the jeweler needed. MEASURE WITH YOUR FINGER Place your finger on the screen and adjust the guide to estimate your size. Great when you don't have a ring to compare. MEASURE WITH A RING Place a ring you already own on the screen and match the circle to the inside edge. The most accurate way to find your size at home. EVERY SIZE SYSTEM YOU NEED See your result in US/CA, UK, JP, diameter (mm & inch), and circumference (mm) — all at once, no switching. SCREEN-CALIBRATED ACCURACY Auto-detects your iPhone model for precise on-screen measurements. SAVE & COMPARE Label and save measurements for yourself, a partner, or family. Come back anytime to check. Free. No ads. No account required.

Find your ring size in seconds with RingFit Gauge. Measure an existing ring by placing it on your screen and matching the guide to the ring’s inner edge. RingFit converts the result into clear international sizes, including US, EU, UK, Japan, and more. No ring available? Use the guided paper-strip method to estimate finger circumference, then convert it to a recommended ring size. KEY FEATURES • Measure an existing ring on screen • Estimate finger size with a guided paper-strip method • Convert ring sizes across international standards • Calibrate your screen for real-world measurements • Use a precision ruler in millimeters, centimeters, and inches • Save measurements locally for later • Use Gift Mode for surprise ring shopping • Explore bracelet sizing and necklace length guides PRIVATE BY DESIGN RingFit works primarily on your device. No account, email, or password is required. IMPORTANT Ring size charts and manufacturing tolerances can vary. For expensive, custom, or permanent jewelry, confirm the final size with a professional jeweler. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://msacore.net/legal/ringfit-privacy