- Paper or string
-STEP 1: If using paper, start by cutting out a strip of paper that is approximately 3/4-inch wide and 4 inches long.
STEP 2: Wrap the paper around the base of your finger, as tight as you possibly can without ripping the paper, if using string just make sure it's extremely firm. Then mark where the two pieces overlap. The length of the paper or string you've measured in millimeters from line to line is the circumference of the intended finger.*
STEP 3: After finding this measurement, double-check you've measured it as tight as possible, then check our conversion chart below and find your corresponding ring size.