Gold Purity Calculator

This tool helps you calculate the purity of gold based on its karat and weight. Enter the gold’s karat, the weight, and select the weight unit to get the purity percentage, the pure gold weight, and equivalent volume.

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Enter karat (or select):

You can either select a common karat from the dropdown or enter it manually in the format e.g 18k

Enter weight:

Enter the gold’s weight and select the appropriate unit.

About Gold

Gold is a precious metal known for its beauty, durability, and resistance to corrosion. It’s measured in karats (k), with 24k being pure gold. However, pure gold is too soft for most jewelry and is therefore usually alloyed (mixed) with other metals.

Different colors of gold are achieved through different alloys. For example, white gold is often alloyed with nickel, palladium, or silver, and rose gold contains copper.