How is 1 hectoliter different from 1 kiloliter?

For this case the main unit is liter.

The first thing you should know is that the liter is a unit of volume.

The difference then between hectoliter and kiloliter is the conversion factor.

For hectoliter we have:

1 hectoliter = 100 liters

For kiloliter we have:

1 kiloliter = 1000 liters

The difference between both is the conversion factor:

1 hectoliter = 100 liters

1 kiloliter = 1000 liters

the device is called “ rocket engine”