Your finger size can change during the day, the best time to measure is at the end of the day when your fingers are at their largest. Do not measure when your hands are cold as your fingers could be up to half a size smaller than usual!
Your ring should fit your finger comfortably: it should be snug enough not to fall off, but loose enough to slide over your knuckle.
If you’re buying a gift, the best way to establish ring size is to borrow a ring of his/hers and use our ring measuring guide to determine its size.
Size Guide