Diamond Weight Calculator

Select the shape of your diamond below:

The shape of my diamond is


This will be the same number for the widest point for round diamonds.

Diamond graphic indicating the measurements

Your Diamond Carat Weight is


Download our Free Diamond Carat Size Chart to see how diamonds of different carat weights and shapes look. Simply print the the PDF and compare to your diamond to establish its weight in carats.

Use the diamond weight calculator to provide WP Diamonds with information about the carat weight of your diamond if you have doubts about the information you currently have or you are missing this information about your diamond. Knowing the precise carat weight of the diamond will help us to give you a precise value when selling and is one of the most crucial characteristics of any diamond. Call our US team with any questions you may have.

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