1 carat = 0.2 grams
Convert carats to grams.
Both directions on one page — swap the units and the whole thing runs backwards.
Type a value, or “5cm to in”
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The formula
g = ct × 0.2
Worked through with a real value: 10 carats = 2 grams.
Going the other way: ct = g × 5, so 1 gram = 5 carats.
What each unit is
- carat ct
- A fifth of a gram, exactly 0.2 grams. The unit for gemstones and precious metals in jewellery.
- gram g
- A thousandth of a kilogram, the everyday metric unit for food, medicine and small measurements.
Where these come from
- 1 carat = 0.0002 kilograms
- 1 gram = 0.001 kilograms
Every other number on this page is computed from those, and each category is pinned to conversions worked out by hand from the units' primary definitions before it ships.
Conversion tables
| carats (ct) | grams (g) |
|---|---|
| 1 | 0.2 |
| 2 | 0.4 |
| 3 | 0.6 |
| 4 | 0.8 |
| 5 | 1 |
| 6 | 1.2 |
| 7 | 1.4 |
| 8 | 1.6 |
| 9 | 1.8 |
| 10 | 2 |
| 20 | 4 |
| 25 | 5 |
| 50 | 10 |
| 75 | 15 |
| 100 | 20 |
| grams (g) | carats (ct) |
|---|---|
| 1 | 5 |
| 2 | 10 |
| 3 | 15 |
| 4 | 20 |
| 5 | 25 |
| 6 | 30 |
| 7 | 35 |
| 8 | 40 |
| 9 | 45 |
| 10 | 50 |
| 20 | 100 |
| 25 | 125 |
| 50 | 250 |
| 75 | 375 |
| 100 | 500 |
Questions
How many grams are in a carat?
1 carat = 0.2 grams.
How do I convert carats to grams?
Use g = ct × 0.2. For example, 10 carats = 2 grams.
How many carats are in one gram?
1 gram = 5 carats.
What is 10 carats in grams?
10 carats = 2 grams.
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