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Gram to Carat Converter

VerifiedLast reviewed: Jan 19, 2026Fact checked by: Adil BaltiFactor: 1 g = 5 ctSource: Encyclopædia Britannica
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What is Gram to Carat Converter

This converter changes mass from grams (g) to metric carats (ct). It computes accurate values based on the international standard where 1 metric carat is defined as exactly 0.2 grams, yielding 5 carats per gram.

Definitions of Gram and Carat

What is Gram?

A gram is a unit of mass in the metric system defined as one-thousandth of a kilogram. It serves as a fundamental metric unit for small weight measurements.

What is Carat?

A carat is a unit of mass used specifically for measuring gemstones and pearls. It is standardized as exactly 200 milligrams or 0.2 grams.

Gram to Carat Formula

ct=g×5\text{ct} = \text{g} \times 5

Conversion explanation: Multiply the value in Gram by 5 to get the equivalent value in Carat.

How to Convert Gram to Carat

To convert a value from grams to carats, multiply the value by the conversion multiplier:

Carats = Grams × 5

Step-by-Step Example

Converting a 250 gram mass into carat:

  • Identify the multiplier factor: 5.
  • Multiply 250 by the factor: 250 × 5 = 1250.
  • Result: 250 grams is equal to 1250 carats.

Gram to Carat Conversion Table

Gram [g]Carat [ct]
0.01 g0.05 ct
0.1 g0.5 ct
1 g5 ct
2 g10 ct
3 g15 ct
4 g20 ct
5 g25 ct
6 g30 ct
7 g35 ct
8 g40 ct
9 g45 ct
10 g50 ct
20 g100 ct
30 g150 ct
50 g250 ct
100 g500 ct
500 g2500 ct
1000 g5000 ct
Rate This Gram to Carat Converter:
5 /5 (79 votes)

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