Ring Size

Things You'll Need

  1. Cut a thin strip of paper
  2. Wrap the paper tight around your finger. Make sure the paper is below the joint of your finger and close to your knuckle.
  3. Mark the spot where the paper meets and measure the distance with your ruler.
  4. Use the following chart to determine your ring size. Rings also come in half sizes, the measurements of which, of course, will fall somewhere in between the whole sizes.
US Ring Size Perimeter/MM
4 46.47
4.5 48.04
5 49.03
5.5 50.55
6 51.81
6.5 53.07
7 54.32
7.5 55.74
8 57.15
8.5 59.40