Length
Mass . . . kilogram Length . . . meter Time . . . second Charge . . . Coulomb All the other units are multiples or combinations of these.
Three metric units of measurements, millimetres (mm), centimetres (cm), metres (m).
Yes, it is defined as 1000 kilograms. Note, though, that there is also a slightly different ton in the imperial units. Therefore 1000 kg. is sometimes called "metric ton", when there is a possibility...
Centimeter Meter Kilo meter and so on
How to Measure Length in Metric Units
How to Convert Metric Units of Capacity
How to Operate with Metric Units of Length
How to Estimate and Measure Capacity in Metric Units