Tonnes to Kilograms Converter
An online tool to convert tonnes to kilograms and kilograms to tonnes in a single field.
Type a value in either field — conversion is instant
About converting tonnes to kilograms
The tonne is a large mass unit used for freight, materials, and machinery, while the kilogram is the SI base unit of mass. This calculator converts tonnes to kilograms and kilograms to tonnes in both directions.
The math could not be simpler: 1 metric tonne equals 1000 kilograms, and 1 kilogram is 0.001 tonne. Just enter a value in either field.
All calculations run locally in your browser and update instantly — nothing is uploaded, and the result is recomputed on the fly.
Why use this converter
Both directions at once
Convert tonnes to kilograms and kilograms to tonnes in one field with no mode switching.
Great for freight
Handy for shipping weights, building materials, and bulk goods.
Instant conversion
Results appear as you type, with no buttons or waiting.
Frequently asked questions
How many kilograms are in one tonne?
One metric tonne equals 1000 kilograms. For example, 2.5 tonnes is 2500 kg.
How do I convert kilograms to tonnes?
Divide the number of kilograms by 1000. For example, 7500 kg is 7.5 tonnes.
Which tonne does this use?
It uses the metric tonne (1000 kg). The US short ton and UK long ton have different values.
Can I convert decimal values?
Yes, enter any number, including decimals such as 0.35 tonnes or 1250 kg.
Is my data stored?
No, all calculations happen locally in your browser and nothing is sent to a server.