Convert tonnes to kilograms
Enter a value in tonnes to convert it to kilograms.
tonnes to kilograms reference
| tonnes | kilograms |
|---|---|
| 1 t | 1000 kg |
| 2 t | 2000 kg |
| 5 t | 5000 kg |
| 10 t | 10000 kg |
| 25 t | 25000 kg |
| 50 t | 50000 kg |
| 100 t | 100000 kg |
The conversion factor
One tonne is 1000 kilograms. So to convert, multiply your figure in tonnes by 1000. To go the other way, multiply kilograms by 0.001.
Doing it in your head
For a quick estimate, round the factor: roughly "times 1000". Use the exact converter above when the number matters.
Where this conversion comes up
Recipes, shipping and luggage limits, body weight, and nutrition labels.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many kilograms are in a tonne?
1 tonne = 1000 kilograms.
What is the formula to convert tonnes to kilograms?
Multiply the number of tonnes by 1000. To go back the other way, multiply kilograms by 0.001.
What is 10 tonnes in kilograms?
10 tonnes = 10000 kilograms. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.