Metric ton

Tonne
Megagram
A concrete block that masses 1 tonne (1000; kilograms)
General information
Unit systemNon-SI
Unit ofmass
Symbolt
Mg 
In SI units:1000 kg

The tonne or metric ton (symbol: t) is a unit of measurement for mass. It is equal to one thousand kilograms, or one megagram (one million grams). When people say "ton," in countries which use the SI, they likely mean the metric ton.