Wrap a thin strip of paper around the base of your finger, snug but not tight, and mark where it overlaps.
Lay the strip flat and measure the length in millimetres. That is the circumference of your finger; match it to the size chart on our Ring Size Chart page.
Measure at the end of the day, when fingers are slightly larger, and if you are between sizes, choose the larger one. If in doubt, send us the measurement and we will confirm it.