How to measure your ring size
The best way to accurately measure your ring size is to be measured at a local jewellers. Alternatively you can use a DIY ring sizer. It's not advisable to measure your ring size with paper or string - this won't give an accurate reading.
You may find your ring size changes throughout the day depending on the warmth of your hands and after physical activity.
A larger ring size is often required when considering a wide ring or a set of stacking rings
Also bear in mind that your ring must be able to fit over your knuckle when taking a measurement.