Calculator.

Ring Size Calculator.

Find your perfect ring size using measurements or convert between US, UK, and EU sizing systems. Get accurate results for jewelry shopping.

Select Your Ring Size

Use the slider below to select your ring size and see conversions in different international standards.

Select a size

US Size 3

US Size 14

Drag the slider to select your ring size

Popular Sizes

How to Find Your Size

Select Your Ring Size

Use the slider or click a popular size to see all conversions

Complete Ring Size Guide

Finding your perfect ring size is essential for comfort and security. A well-fitted ring should slide over your knuckle with slight resistance and fit snugly on your finger without being too tight.

How to Measure Your Ring Size at Home

There are several reliable methods to determine your ring size:

  • String/Paper Method: Wrap a thin strip of paper or string around your finger, mark where it overlaps, and measure the length in millimeters. This is your circumference.
  • Existing Ring Method: Measure the inside diameter of a ring that fits well using a ruler. Measure at the widest point.
  • Ring Sizer Tool: Use a printable ring sizer or purchase a plastic ring sizer set for the most accurate measurement.

Understanding Ring Size Systems

  • US/Canada: Uses numerical sizes (typically 3-14), with half sizes available
  • UK/Australia: Uses letters (A-Z), sometimes with half sizes
  • EU/Europe: Based on the inner circumference in millimeters (44-72)

Factors That Affect Ring Size

  • Temperature: Fingers swell in heat and shrink in cold
  • Time of day: Fingers are largest in the evening
  • Activity level: Exercise can cause temporary swelling
  • Diet: Salt intake can affect finger size
  • Ring width: Wider bands require a larger size

Tips for the Perfect Fit

  • Measure multiple times on different days
  • Measure at room temperature, at the end of the day
  • Consider comfort fit bands for better wearability
  • When in doubt, size up rather than down
  • Remember that different fingers have different sizes

Frequently Asked Questions

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