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[[File:A_1-tonne_weight_(geograph_6511341).jpg|A 1-tonne weight (geograph 6511341)|thumb]] '''Tonne''' is a unit of [[mass]] commonly used in the [[metric system]]. It is equivalent to 1,000 [[kilograms]] (kg), or approximately 2,204.6 [[pounds]] (lbs). The tonne is often referred to as a metric ton in the United States and some other regions. This unit of measurement is widely used in various fields such as [[shipping]], [[manufacturing]], and [[agriculture]] to quantify large quantities of materials or products.

== Overview ==
The tonne is part of the [[International System of Units]] (SI), which is the modern form of the metric system. It is designated by the symbol "t". The tonne is used globally in most countries, except for the United States, where the [[short ton]] (2,000 pounds) and the [[long ton]] (2,240 pounds or 1,016 kilograms) are more commonly used. However, for international trade and scientific purposes, the tonne is universally recognized.

== Usage ==
In [[commerce]] and everyday use, the tonne is a convenient unit for measuring large quantities. For example, in the [[construction industry]], materials such as sand, gravel, and crushed stone are often sold by the tonne. In [[agriculture]], produce yield, such as grains, is commonly quantified in tonnes. The [[shipping industry]] also uses the tonne to measure the cargo capacity of ships, known as [[deadweight tonnage]].

== Variants ==
There are several variants of the tonne, which include:

* '''Megatonne (Mt)''': Equivalent to 1,000,000 tonnes, this unit is often used to describe the energy output of [[nuclear weapons]] or the amount of [[carbon dioxide]] emissions.
* '''Gigatonne (Gt)''': Equivalent to 1,000,000,000 tonnes, used in scientific contexts to measure large quantities, such as the mass of [[icebergs]] or glaciers.

== Environmental Impact ==
The concept of the tonne is also significant in discussions about the [[environment]] and [[climate change]]. For instance, the [[carbon footprint]] of an individual, company, or country is usually measured in tonnes of [[carbon dioxide]] equivalent. This measurement helps in understanding and managing the impact on the climate.

== Conclusion ==
The tonne is a versatile and widely used unit of measurement that plays a crucial role in various industries and environmental studies. Its adoption across different fields highlights the importance of having a standard unit that facilitates international trade and communication.

[[Category:Units of mass]]
[[Category:Metric system]]

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Tonne - Revision history

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