Convert 400 ct to kg
400 carats = 0.08 kilograms
Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work
How to convert carats to kilograms
- Formula:
kilograms = carats × 0.0002 - Put in the value: 400 carats.
- Result: 0.08 kilograms.
Carats to kilograms table
| carats | kilograms |
|---|---|
| 1 ct | 0.0002 kg |
| 2 ct | 0.0004 kg |
| 5 ct | 0.001 kg |
| 10 ct | 0.002 kg |
| 20 ct | 0.004 kg |
| 50 ct | 0.01 kg |
| 100 ct | 0.02 kg |
| 400 ct | 0.08 kg |
| 500 ct | 0.1 kg |
| 1,000 ct | 0.2 kg |
Converting the other way: kilograms to carats
carats = kilograms × 5,000. So 0.08 kilograms is back to 400 carats; one kilogram is 5,000 carats. See the kilograms to carats table.
Quick estimate in your head
For a rough answer, multiply by about 0.0002: 400 × 0.0002 ≈ 0.08 kg, against the exact 0.08 kg (0.0% out). Good enough to check that a calculated result is sensible.
Common mistakes
The usual slip is using the factor the wrong way round. A carat is smaller than a kilogram, so the number of kilograms must come out smaller than the number of carats. If your answer goes the other way, divide instead of multiplying.
About the units
Carat (ct) and kilogram (kg) are both units of mass. One carat equals 0.0002 kilograms, and one kilogram equals 5,000 carats. Results on this page are rounded for display; the conversion itself uses the exact definitions.
Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.
400 carats in other units
The most readable unit for this amount is ounces (2.821917).
- 80,000 mg
- 80 g
- 0.08 kg
- 0.00008 t
- 2.821917 oz
- 0.17636981 lb
- 0.01259784 st
- 0.00008818 ton
How answers are calculated and checked: methodology.
Questions
How many kilograms are in 400 carats?
0.08 kilograms.
What is the formula to convert carats to kilograms?
kilograms = carats × 0.0002
How many kilograms are in one carat?
One carat is 0.0002 kilograms, so multiply any number of carats by 0.0002.
Is 400 ct more than 400 kg?
No. 400 carats is 0.08 kilograms, which is less than 400 kilograms.
How do I convert carats to kilograms in a spreadsheet?
Put the number of carats in A1 and type =A1*0.0002 in the next cell. Fill the formula down to convert a whole column.