Ring Sizer & Chart

Ring Sizer & Chart is a simple, practical tool for measuring ring size, comparing international ring sizes, and checking ring dimensions before buying or ordering a ring.

Use the app to estimate a ring size from an existing ring, finger measurements, or known diameter and circumference values. It is designed for shoppers, jewelers, couples, gift buyers, and anyone who wants a quick ring size reference.

Features include:
- Measure ring size using an existing ring
- Compare a ring against an on-screen sizing circle
- Enter ring diameter to find the closest size
- Enter finger or ring circumference to estimate size
- Ring diameter and circumference reference charts
- International ring size conversions
- Compare US, UK, EU and other common sizing systems
- Quickly search and browse ring sizes
- View measurements in millimeters and inches
- Helpful ring measuring instructions
- Ring sizing tips for more consistent measurements
- Reference information for choosing between nearby sizes

The on-screen ring sizing tool lets you place an existing ring over the display and adjust the sizing circle until it matches the inside edge of the ring. For better accuracy, the screen calibration and measurement tools help account for differences between device screen sizes.

If you already know the inside diameter or circumference of a ring, enter the measurement to quickly find a corresponding ring size. This is useful when measuring with a ruler, caliper, ring sizing strip, string, or another measuring method.

The built-in ring size chart makes it easy to compare measurements and sizing standards when shopping internationally. Ring sizes can vary between countries and manufacturers, so the conversion tools provide a convenient reference when comparing jewelry listings.

Ring Sizer & Chart can help with:
- Engagement rings
- Wedding rings and bands
- Fashion rings
- Anniversary rings
- Promise rings
- Gift shopping
- Online jewelry purchases
- Comparing international ring sizes
- Checking the approximate size of an existing ring

For the best results, measure more than once and avoid measuring fingers when they are unusually hot, cold, or swollen. Finger size can change throughout the day, and wider bands may require a slightly different fit.

Ring Sizer & Chart is intended as a convenient measuring and reference tool. Actual ring fit can vary because of ring width, shape, manufacturer tolerances, finger shape, temperature, and measuring technique. For expensive, custom, or permanently resized jewelry, confirm your size with a professional jeweler before ordering.