Ring Sizer — Measure Ring Size

Find your ring size with ease. Measure rings and fingers, convert international ring sizes, and keep track of your measurements with Ring Sizer.

Find your ring size with Ring Sizer. Measure a ring you already own, check your finger size, and convert between international ring sizing systems—all from your phone. Buying a ring online or choosing a gift? Getting the right size can be tricky when you can't visit a jewelry store. Ring Sizer gives you several ways to measure a ring or finger, compare sizing standards, and keep track of your measurements in one place. MEASURE A RING Have a ring that fits you well? Place it on your phone's screen and adjust the sizing guide to match its inner diameter. Find the corresponding ring size without measuring your finger. MEASURE YOUR FINGER IN 2D Don't have a ring to measure? Use the 2D finger sizing tool to check your finger size and find a suitable ring size. MEASURE YOUR FINGER IN 3D Use a credit card as a size reference to calibrate the measurement. Follow the on-screen guide to measure your finger with the 3D sizing tool. RING SIZE CONVERTER Know your ring size in one system but need another? Convert between ring sizing standards to compare sizes used in different countries and regions. MEASUREMENT HISTORY Keep your previous ring and finger measurements in one place. Review saved results whenever you need them for a future purchase or gift. ON-SCREEN RULER Measure small objects directly on your phone's screen with the built-in ruler. Calibrate it using a familiar reference to improve measurement accuracy. INTERNATIONAL RING SIZE CHART Compare ring sizes across different sizing systems. Use the ring size chart to look up corresponding measurements and understand how sizing standards differ around the world. FREQUENTLY ASKED QUESTIONS Q: How can I measure my ring size at home? A: Measure a ring you already own or use the 2D and 3D finger sizing tools. Q: How do I convert ring sizes between countries? A: Use the ring size converter and international ring size chart to compare sizing systems. Q: Can I measure my ring size without a ring? A: Yes. Use the finger measurement tools to check your finger size without an existing ring. SUBSCRIPTION TERMS Payment will be charged to your App Store account upon purchase. Subscriptions automatically renew unless canceled at least 24 hours before the current period ends. You can turn off auto-renewal in your App Store account settings. Any unused free trial will be forfeited when you purchase a subscription. Renewal prices depend on your selected plan. Privacy policy: https://alvicomp.ee/privacy/ Terms of use: https://alvicomp.ee/terms_of_use/