To convert tons to kilograms 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.

In 17 tons of iron ore252sulphur there are 17000 kilograms, to achieve this take 17 and just multiply by 1000.

You have 79 tons of timber but you need to know how many kilograms that is. To get the answer multiply by 1000 which gives you 79000 kilograms.

How many kilograms of tin are there in 52 tons? Just multiply by 1000 to get the answer of 52000 kilograms.

You've got 51 tons of lead but someone only wants to buy that in units of kilograms, to change the units multiply by 1000. Now you have 51000 kilograms.