Carats to Kilograms Converter
Convert carats (ct) to kilograms (kg), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a weight, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 ct = 0.0002 kg
- 1 × 0.0002 = 0.0002 kg
How to convert carats to kilograms
1 kg = 5,000 ct, so divide by 5,000 to go from carats to kilograms (1 ct = 0.0002 kg).
kg = ct ÷ 5,000 ct = kg × 5,000
Worked example:
1 ct = 0.0002 kg 5 × 0.0002 = 0.001 kg
Carats to kilograms table
| Carats | Kilograms |
|---|---|
| 1 ct | 0.0002 kg |
| 2 ct | 0.0004 kg |
| 3 ct | 0.0006 kg |
| 4 ct | 0.0008 kg |
| 5 ct | 0.001 kg |
| 6 ct | 0.0012 kg |
| 7 ct | 0.0014 kg |
| 8 ct | 0.0016 kg |
| 9 ct | 0.0018 kg |
| 10 ct | 0.002 kg |
| 15 ct | 0.003 kg |
| 20 ct | 0.004 kg |
| 25 ct | 0.005 kg |
| 30 ct | 0.006 kg |
| 40 ct | 0.008 kg |
| 50 ct | 0.01 kg |
| 75 ct | 0.015 kg |
| 100 ct | 0.02 kg |
| 250 ct | 0.05 kg |
| 500 ct | 0.1 kg |
| 1000 ct | 0.2 kg |
About the units
- Carats (ct)
- Carats, a specialised unit. Metric carat, 200 mg exactly. Definition: NIST Handbook 44 (2024), Appendix C: General Tables of Units of Measurement.
- Kilograms (kg)
- Kilograms, a metric unit. Definition: BIPM SI Brochure.