Take a length of floss or string and wrap it around the base of your finger.
Mark where the floss or string first overlaps with a pen.
Stretch the length of string out along a ruler or measuring tape, and take down the length in millimeters.
The length you measured is the circumference of your finger.
Use the ring size chart below to compare the circumference of your finger to the standard ring sizes. Select one size up if your measurement is higher than the limit below for each size.
TIP: String and floss can stretch, so don't pull them too taut. If you do, your measured ring finger size may be larger than your finger and any rings you purchase may be too big.
