How to convert carats to grams
To convert carats (ct) to grams (g), multiply the value in carats by 0.2.
g = ct × 0.2
Example: 10 ct = 2 g.
You can also type 10 ct to g into the smart calculator, or mix units: 1 ct + 1 g.
Carats to Grams conversion table
| Carats | Grams |
|---|---|
| 0.01 ct | 0.002 g |
| 0.1 ct | 0.02 g |
| 0.25 ct | 0.05 g |
| 0.5 ct | 0.1 g |
| 1 ct | 0.2 g |
| 2 ct | 0.4 g |
| 3 ct | 0.6 g |
| 4 ct | 0.8 g |
| 5 ct | 1 g |
| 6 ct | 1.2 g |
| 7 ct | 1.4 g |
| 8 ct | 1.6 g |
| 9 ct | 1.8 g |
| 10 ct | 2 g |
| 12 ct | 2.4 g |
| 15 ct | 3 g |
| 20 ct | 4 g |
| 25 ct | 5 g |
| 30 ct | 6 g |
| 40 ct | 8 g |
| 50 ct | 10 g |
| 60 ct | 12 g |
| 75 ct | 15 g |
| 100 ct | 20 g |
| 250 ct | 50 g |
| 500 ct | 100 g |
| 1,000 ct | 200 g |
Converting grams back to carats
1 g = 5 ct. See the Grams to Carats converter, or press the swap button above.
About the units
Carat (ct)
Exactly 200 milligrams, used for gemstones. Not the same as the karat purity scale for gold.
Gram (g)
One thousandth of a kilogram.
Mass is the amount of matter in an object; in everyday speech it is called weight. The SI base unit is the kilogram, defined since 2019 through the Planck constant. The international avoirdupois pound is defined as exactly 0.45359237 kilograms.
Questions and answers
How many grams are in a carat?
One carat (ct) equals 0.2 grams (g).
How do I convert carats to grams?
To convert carats to grams, multiply the value in carats by 0.2. The formula is g = ct × 0.2. For example, 10 ct = 2 g.
What is 10 ct in g?
10 carats is 2 grams.
Which is bigger, a carat or a gram?
A gram is bigger: 1 g = 5 ct.
What is the difference between a ton and a tonne?
A tonne (metric ton) is 1,000 kg. A US short ton is 2,000 lb (907.18 kg) and an imperial long ton is 2,240 lb (1,016.05 kg).
Does this ct to g converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.