Convert grams to carats

1 g=5ct

Use the converter below to change any grams value into carats instantly — with formula, conversion table, and real-world examples.

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Conversion formula

Forward

carats = grams × 5

Reverse

grams = carats × 0.2

Example: 10 g × 5 = 50 ct.

About both units

From

Gram

The gram equals one thousandth of a kilogram. It is the standard unit in European cooking, pharmaceuticals and jewellery. An A4 sheet of 80 g/m² paper weighs about 5 g; a regular chicken egg is around 60 g. The word "gram" comes from the Greek "gramma", a small weight.

Real-world: A chicken egg weighs about 60 g. A standard bar of chocolate is 100 g. A euro coin weighs 7.5 g.

Read full gram reference →

Carat

The metric carat equals 200 milligrams exactly. It is the standard unit for gemstone weight — diamonds, rubies, sapphires and emeralds are sold by the carat. Do not confuse with the purity carat (karat) used for gold (24K = pure gold).

Real-world: A 1-carat diamond weighs 200 mg and is typically 6.5 mm across. The Hope Diamond is 45.52 carats (9.1 g).

Read full carat reference →

Gram to Carat conversion table

Common grams to carats values for quick reference.

Gram (g)	Carat (ct)
1 g	5 ct
5 g	25 ct
10 g	50 ct
25 g	125 ct
50 g	250 ct
100 g	500 ct
250 g	1,250 ct
500 g	2,500 ct
1,000 g	5,000 ct
5,000 g	25,000 ct

Tips & common mistakes

Quick tips

1 kitchen tablespoon of water weighs about 15 g, but 1 tablespoon of flour is only 8 g — density varies.
A kitchen scale reads to 1 g; a jewellery scale to 0.01 g.
Gold is priced by gram in Europe and per troy ounce in international markets.

Avoid these

Assuming a tablespoon of any ingredient equals 15 g — true only for water.
Confusing g (gram) with mg (milligram) on medication labels.
Using 28 g instead of 28.35 g when converting an ounce in precision baking.

Frequently asked questions

How many carats in a gram?

One gram equals 5 carats.

How do I convert grams to carats?

Multiply the gram value by 5 to get the equivalent in carats.

What is 100 grams in carats?

100 grams equals 500 carats.

Is a gram bigger than a carat?

Yes. 1 gram equals 5 carats, so one gram is larger.

How to convert grams to carats without a calculator?

Multiply by 5 for a quick estimate; use a calculator for precise results.

Related weight conversions

📊 See full comparison matrix →

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