How to measure ring size using string/paper, and a ruler
1. Cut a strip of paper or use a piece of string. About 10β12 cm long and 0.5 cm wide works best.
2.Β Wrap it around the base of your finger.Β Β Make sure itβs snug but not too tight (your ring should slide over the knuckle comfortably).
3.Β Mark the point where the ends meet.Β Β Use a pen or hold it carefully.
4.Β Measure the length with a ruler.Β Lay the paper/string flat and measure the distance in millimetres.Β This number = the circumference of your finger.
The millimetres you measure with paper/string will correspond directly to the EU ring size.
TIPS & TRICKS
Measure your finger in the evening, when itβs naturally at its largest. Cold hands can shrink up to half a size β make sure your fingers are warm. Skip cocktails and salty snacks before measuring; they can cause temporary swelling.