Online Ring Sizer
Ring Size Calculator
Enter the distance around your finger (circumference) or across the inside of a ring (inside diameter). No screen calibration is needed.
Your measurement
Regional equivalents are approximate and retailer charts can vary. See the sizing data and conversion rules.
Measure a ring on screen · View the size chart · Already know your ring size? Convert between sizing systems
Need to measure your finger? See the illustrated paper-strip guide