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:

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

Scroll down to download your free ring size kit!

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

1. Roll in the tape measure
   
2. Place inside the ring
3. Adapt the roll to the ring size
4. Read off the ring size

Download Ring Size Tool

• 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

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.

• Free, insured shipping
• Lifetime warranty and exchange
• 360° and superzoom product views
• Virtual ring sizer
• Style Guide
• Diamond Guide
• ….and much more!

• How to create your own diamond ring
• How to select a diamond
• Why My Diamond Ring?