⚖️ Grams to Carats Converter

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1 gram =
5 carats
1 carat =
0.2 grams
Formula
ct = g × 5
Handy values
5 g = 25 ct · 10 g = 50 ct · 100 g = 500 ct

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⚡ Grams to Carats: the quick answer

1 g = 5 ct 1 gram equals 5 carats

To convert grams to carats, multiply the value by 5. To go the other way, multiply carats by 0.2 to get grams.

↔ Convert carats to grams instead

🧮 Formula

Grams to Carats
ct = g × 5
Carats to Grams
g = ct × 0.2

Where

  • g = the weight in grams
  • ct = the weight in carats
Every unit here is defined by its weight in kilograms, so the conversion factor is (kilograms per gram) ÷ (kilograms per carat).

📊 Grams to Carats conversion table

Grams (g)Carats (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
12 g60 ct
14 g70 ct
15 g75 ct
20 g100 ct
21 g105 ct
24 g120 ct
25 g125 ct
30 g150 ct
40 g200 ct
50 g250 ct
60 g300 ct
75 g375 ct
80 g400 ct
100 g500 ct
200 g1,000 ct
250 g1,250 ct
300 g1,500 ct
400 g2,000 ct
500 g2,500 ct
750 g3,750 ct
1,000 g5,000 ct

📘 About these units

Gram (g). The gram is one thousandth of a kilogram, the everyday unit for food, gold and small items.

Carat (ct). The metric carat is 200 milligrams, the unit for diamonds and gemstones.

❓ Frequently asked questions

How many carats are in one gram?

There are 5 carats in one gram.

How do I convert grams to carats?

Multiply the number of grams by 5. For example, 10 grams equal 50 carats.

How many grams are in one carat?

One carat equals 0.2 grams.

How many carats is 12 grams?

60 carats. Other common values: 5 grams = 25 carats and 100 grams = 500 carats.

What people are saying
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Anonymous · 22 Oct 2026