To convert tonnes to kilos multiply by 1000. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.
How many kilos of steel are there in 4 tonnes? Just multiply by 1000 to get the answer of 4000 kilos.
To convert 70 tonnes into kilos multiply by 1000 giving 70000 kilos.
You've got 76 tonnes of iron ore252sulphur but someone only wants to buy that in units of kilos, to change the units multiply by 1000. Now you have 76000 kilos.