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Find Your Ring Size

Request a Free Ring Sizer

We are happy to send you a complimentary plastic ring sizer so that you can easily measure your ring size at home. Plastic ring sizers shipped to the US and Canada will arrive within five to seven business days and delivery time to Australia may take longer.

Ring Sizing Guide

If you would like to determine your ring size immediately, we suggest that you print our simple Ring Sizing Guide and read the instructions carefully. Before you print, be sure to check that page scaling is set to "none" on your print dialog box. In order to view this guide, you will need to use Adobe Acrobat Reader. Download it for free.

How to Find Her Ring Size

  • If you are aiming for a surprise, read our tips about how to find your partner’s ring size without her knowing.
  • One tried-and-true method is asking a parent or close friend if they know her finger size.
  • Borrow one of your partner's rings and use the Ring Sizing Guide above to determine its size. The ring should be from the correct finger on the correct hand.
  • The average finger size is a 6 to 6.5 for women, and 9 to 10 for men. When no other information is available to you, selecting one of these sizes is your best choice.

Helpful Hints

  • Our dominant hands are generally slightly larger – make sure you measure for her left!
  • Rings with wider bands will fit a bit tighter. If you plan to measure one of her rings, try to measure one with a similar width as t he ring you want to purchase.
  • If it comes down to guessing, err on the large side. You want the ring to be able to slip onto her finger when you’re proposing!

Free 30 Day Resize Policy

Brilliant Earth is happy to offer a complimentary 30 day resize period for all US, Canadian, and Australian customers. If your ring doesn’t fit perfectly, Brilliant Earth offers complimentary shipping both ways while we resize your ring.

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International Ring Size Conversion

All Brilliant Earth rings are specified in standard US sizes. If you are looking for Australia, New Zealand, UK, or Ireland ring sizes, view our ring size conversion chart

view size chart