DIY ring sizing

- Please Note: the below guides are for a ROUGH estimate and should not be used to determine actual ring sizes. The best way to find out your ring size is to visit a jeweller so they can measure your finger in person using proper ring sizing equipment.

Here are two useful options for a DIY ring sizing... 

Option 1 – Inside Circumference

  • Wrap a piece of string a couple of times around the widest part of the finger you wish to wear the ring on, for most people this is usually the bottom knuckle. (Remember, the ring has to get over your knuckle)

  • Hold the string in place by bracing it with the surrounding fingers, then with a pen mark a line where the string overlaps. (See image above)

  • Unroll the string and measure the distance between the two marks, by placing the string next to a ruler.

  • This measurement is your Inside Circumference; use the chart bellow to convert this into your ring size.

Option 2 – Inside Diameter

option2

  • if you already have a ring that fits the finger you wish to wear the new ring on you can use this method.

  • Place the ring over a ruler and measure the inside diameter of the ring. The diameter is the distance between the two internal sides.
    - Imagine a line going from one side of the ring to the other passing through the centre of the circle. (See image above)

  • This is your Inside Diameter; use the chart bellow to convert this into your ring size.

Please Note: For both methods it is best to be as accurate as possible, down to half a millimetre. There is only a fraction of a millimetre between sizes as you will see on the chart below, so the smallest error can make a big difference. Option 1 is the most accurate of the two options.

Further Information: