⚠ Important: For 100% Ring Size Accuracy, visit your local jeweler for an in-person measurement. All tools on this site are estimates only.
Quick Reference Guide

Ring Size — How to Measure

The simplest methods for measuring your ring size at home, with a full size chart.

This quick-reference guide covers the core ring size measurement methods. For more detail on each method, see our full at-home guide.

The Paper Method (Most Reliable)

  1. 1
    Cut a paper strip (~10mm wide)

    A strip of paper, a receipt, or thin card all work well.

  2. 2
    Wrap snugly around your ring finger base

    Must pass over your knuckle.

  3. 3
    Mark the overlap, measure in mm

    This is your circumference. Find it in the chart below.

The Existing Ring Method

Measure the inside diameter of a ring that fits the right finger. Use the diameter column in the chart below.

Quick Size Chart

USUKEUDiameter (mm)Circumference (mm)
5J4915.749.3
5.5K50.516.150.6
6L51.516.551.9
6.5M5316.953.2
7N5417.354.4
7.5O55.517.755.7
8P5718.257.2
8.5Q5818.558.2
9R5918.959.3
10T6219.862.2
11V6520.765.0

View the full conversion chart →

Always size up when between sizes. If your measurement falls between two rows, choose the larger size. Visit a jeweller for 100% accuracy on important purchases.