How to Measure the Size of a Ring

Measure precisely to determine ring size.

A ring that is too loose or too tight is uncomfortable to wear or may be easily lost. With four different ring sizing systems in use worldwide, determining a ring's actual size isn't always straightforward. If you have a ring you want to sell, or if you want to buy one that fits as well as a ring you already have, take the time to measure carefully.

Things You'll Need

• Ring
• Paper
• Ruler
• Scissors
• Felt-tip pen
• Ring sizing chart

Instructions

1. Cut a strip of paper 1/2 inch wide and 3-1/2 inches long with scissors.

2. Wrap the paper strip into a circle and place it on the inside of the ring. Let it unroll and adjust it until it fits snugly against the inner surface of the ring.

3. Make a mark with the felt-tip pen at the point where the paper overlaps itself.

4. Remove the paper strip from the ring and unwrap it. Lay it down on a flat surface.

5. Measure from the end of the paper to the mark. A measurement in millimeters will give you greater accuracy, but most ring size charts include measurements in inches as well.

6. Compare the measurement to a chart that classifies the ring size standards in your area.

References

• "A Measure of All Things"; Ian Whitelaw; 2007
• World of Jewels: Ring Size Finder