Finding your ring size

The best way to find your ring size is to try on an actual ring—either from a set of ring sizers (available at jewellers) or by measuring a ring you already own that fits well (see below for instructions).

The ring size is the inner circumference of the ring measured in millimetres. If the circumference is a decimal, it should be rounded up to the nearest whole number.

 

Measuring circumference with a tape/paper strip

You can measure the circumference of your finger using a soft measuring tape or a strip of paper. Make sure that the ring will be able to slide over your knuckle, while also not being too loose. You should also take the width of the ring into account – with very wide rings, you will usually need to go up a size.

Measuring the diameter of a ring that fits

An easy way to find your ring size is to measure the inside diameter of a ring you know fits and then convert this measurement to circumference (which is then your ring size):

1. Choose a ring that fits your finger. It should be roughly the same width as the one you intend to buy.
2. Measure the inside diameter of the ring.

3. Work out the circumference by multiplying the diameter by 3.14 and round the result up to the nearest whole number. You can also use the table below as a reference.

Image borrowed from bygulldia.no