The Abbreviation of Tonne: The Tonne (symbol: t) is a metric unit of mass equal to 1,000 kilograms. Tonne is also referred to as a metric ton to distinguish it from the non-metric units of short ton (US), and long ton (UK). Tonne is equivalent to approximately 2,204.6 pounds, 1.102 short tons (US), and 0.984 long tons (UK). The official SI unit is the megagram (symbol: Mg), a less common way to express the same mass.

Tonne Conversions

One tonne is equivalent to:

• In kilograms: 1000 kilograms (kg) by definition.
• In grams: 1000000 grams (g) or 1 megagram (Mg). Megagram is the corresponding official SI unit with the same mass. Mg is distinct from mg, milligram.
• In pounds: Exactly 1000/0.453 592 37 pounds (lb) by definition of the pound, or approximately 2204.622622 lb.
• In short tons: Exactly 1/0.907 184 74 short tons (ST), or approximately 1.102311311 ST.
  • One short ton is exactly 0.90718474 t.
• In long tons: Exactly 1/1.016 046 9088 long tons (LT), or approximately 0.9842065276 LT.
  • One long ton is exactly 1.0160469088 t.

A tonne is the mass of one cubic metre of pure water: at 4 °C one thousand litres of pure water has an absolute mass of one tonne.