The easiest way to size your finger is with a ring that already fits. Print out the chart below & lay your ring directly over it, so that the black circle touches the ring’s inner circle.
Don't have a ring? Wrap a thin strip of paper around the base of your finger. If you have larger knuckles, measure both - you may want to choose a size between the two to allow the ring to slip on comfortably. Mark the spot where the paper meets. Measure the paper’s distance with a ruler. Use the ring size guide below to determine ring size.