To make sure a ring fits right and is neither too loose or too tight, you need to know the correct ring size.

Here, we'll show you:

How to find out your own ring size
How to find out someone else's ring size

Scroll down to download your free ring size kit!

You know your size already?

Depending on manufacturer and country, ring sizes may be given in differing units. If you already know the right ring size in one unit, you can use the table provided here to convert it.

1. Measuring the ring size from the finger

Wrap the tape measure around your finger
Tighten
Read off the ring size

2. Find out someone else's ring size using an existing ring

Roll in the tape measure
Place inside the ring
Adapt the roll to the ring size
Read off the ring size

Free ring size kit

Download Ring Size Tool

Checklist: Determining the ring size

Because of swellings, finger tend to be slightly thicker in the evening and generally in hot temperatures
As hands swell less in colder climates, it is possible that a ring which fits in the summer will be too big in the winter months
A ring’s perceived fit depends on its shank’s width: If the shank is relatively broad, a bigger ring size might be necessary and vice versa

Changing the ring size afterwards

You’ve already gotten a ring in the wrong size? Don’t worry, the ring’s size can still be changed.
In case you'll get it wrong on the first try, My Diamond Ring offers free resizing.