Carat to Gram Converter (ct to g)

How to Convert Carat to Gram

Formula: Gram = Carat × 0.2

Example: 1 ct = 0.2 g

You can also use the interactive converter above. Simply enter any Carat value and the equivalent Gram value will appear instantly. Click the ⇄ button to reverse the conversion.

Here is a closer look at what Carat and Gram are used for, plus answers to the questions people ask most about this conversion.

Step-by-step example — Convert 1 ct to g:

What is Carat and Gram?

A Carat (ct) is a unit of mass equal to exactly 200 milligrams, used almost exclusively for gemstones and pearls.

A Gram (g) is a metric unit of mass equal to one-thousandth of a kilogram. It is the go-to unit for small, everyday quantities.

Real World Uses of Carat to Gram Conversion

• Carat: Commonly used for grading pearls in the gem trade.
• Gram: Commonly used for measuring small parcels and letters for postage.
• Carat: Commonly used by jewelers to price diamonds and gemstones — a higher carat weight means a larger stone.
• Gram: Commonly used on nutrition labels to show protein, sugar and fat content per serving.

Frequently Asked Questions

What is the formula to convert Carat to Gram?

The formula is: Gram = Carat x 0.2. Multiply any Carat value by 0.2 to get the equivalent in Gram.

What is 1 Carat in Gram?

1 ct = 0.2 g.

How many Carat are in 1 Gram?

1 g = 5 ct.

Is Carat bigger or smaller than Gram?

Carat is smaller than Gram. 1 Gram = 5 ct.

What is 5 ct in g?

5 ct = 1 g.

What is 50 g in ct?

50 g = 250 ct.

Is carat the same as karat?

No — carat (ct) measures the weight of a gemstone, while karat (kt) measures gold purity out of 24 parts. The different spelling helps tell them apart.