How To Measure Your Ring Size
The best time of day to measure your ring size is in the evening as your fingers are at their largest.
Avoid measuring your fingers with it is cold because they can reduce in size by at least half a size.
Also a thick ring will have a tight fit so you may need to go a size up if your ring has a thick band.
Step 2
Cut the piece of string or mark the string once you have wrapped it around your finger.
Step 3
Lay out the piece of string against a ruler to read the length of the string in millimeters. Use the ring conversion chart below to find your ring size.