About MeasureMyRing
A simpler way to find your ring size.
MeasureMyRing is a free, browser-based guide for finding the size of a ring you already own.
What this tool does
First, you calibrate your screen against a bank card, ruler, or another item with known dimensions. Then you match an adjustable circle to the inside edge of your ring. The tool shows the measured inner diameter and nearby sizes in India, US, UK, and EU systems.
Why we built it
Ring size labels change between countries and sellers. We wanted a straightforward way to start with a real measurement in millimeters, then compare that measurement with a ring size chart.
Use the result as a starting point
Screen calibration, ring placement, band width, and your preferred fit can all change the best size. For an important purchase, compare your measurement with the seller’s chart or visit a jeweler for a physical fitting. Our FAQ explains the process in more detail.
Get in touch
Have feedback or spotted an issue? Visit our contact page.