Convert carats to kilograms
1 ct = 0.0002 kg. Change the amount below, or read the formula and the reference table further down.
1 carat equals
kilograms
1 ct = 0.0002 kg
The formula
Carats and kilograms both measure weight & mass from the same zero, so a single multiplier does the job.
kg = ct × 0.0002
Going the other way? Convert kilograms to carats.
Carats to kilograms table
Common values, rounded for reading.
| Carats (ct) | Kilograms (kg) |
|---|---|
| 1 | 0.0002 |
| 2 | 0.0004 |
| 3 | 0.0006 |
| 4 | 0.0008 |
| 5 | 0.001 |
| 6 | 0.0012 |
| 7 | 0.0014 |
| 8 | 0.0016 |
| 9 | 0.0018 |
| 10 | 0.002 |
| 15 | 0.003 |
| 20 | 0.004 |
| 25 | 0.005 |
| 30 | 0.006 |
| 40 | 0.008 |
| 50 | 0.01 |
| 75 | 0.015 |
| 100 | 0.02 |
| 250 | 0.05 |
| 500 | 0.1 |
| 1,000 | 0.2 |
Questions people ask
- How many kilograms are in a carat?
- One carat equals 0.0002 kilograms.
- How do I convert carats to kilograms by hand?
- Multiply the number of carats by 0.0002. For a rough check, 0 is close enough for most everyday use.
- What is 1 carat in kilograms?
- 1 carat is 0.0002 kilograms.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.