tonne
B2Pronunciation
UK
- /tˈʌn/
US
- /ˈtən/
Description
- large metric unit of mass
- 1,000 kilograms
- about 2,205 pounds
- used for very heavy things
Imagine you're building something big, like a skyscraper or a bridge, or even stacking hay bales on a farm. You would not measure these in pounds or ounces. Instead, you would likely use a "tonne" (pronounced the same as "ton"). A tonne is a unit of mass equal to 1,000 kilograms, or about 2,205 pounds. It is a common way to measure large amounts of heavy goods, such as coal, grain, steel, or even the weight of a blue whale.
While it is often simply called a "ton" in casual conversation, it is important to distinguish a tonne from the short ton (2,000 lbs) used in the US and the long ton (2,240 lbs) historically used in the UK. Because the tonne is part of the metric system, it is the standard unit in international trade and in many scientific settings. So the next time you hear about a cargo ship carrying several tonnes of supplies, you will know they are talking about a very large amount of weight.
A "tonne" (also known as a "metric ton") is a unit of mass equal to 1,000 kilograms—which translates to roughly 2,204.62 pounds. It is a crucial unit of measurement in global industries that deal with bulk commodities and international logistics. The word itself stems from the French word for a large cask or "tun," reflecting its origins in the metric system established in France.
You will encounter tonnes most frequently when discussing global commodities like oil, iron ore, or wheat. For instance, a report might state, "The factory produced 500 tonnes of steel last month," or "The freighter arrived with 12,000 tonnes of grain." Using the metric tonne provides a standardized language for international commerce, ensuring that a "tonne" in Tokyo is the exact same amount as a "tonne" in Paris, thereby avoiding the ambiguity of regional measurement systems.
It is vital not to confuse the tonne with its cousins: the American "short ton" (2,000 pounds) and the British "long ton" (2,240 pounds). While they all sound similar, the metric tonne is the specific version used by the majority of the world for official and scientific purposes.
Beyond industrial use, tonnes help us grasp the scale of the natural world. Scientists often use them to describe megafauna; for example, a fully grown African elephant might weigh about 6 tonnes, while a blue whale can reach a staggering 150 tonnes. Whether you are tracking global trade, calculating construction materials, or marveling at the size of a giant animal, understanding the tonne is key to measuring things that are far too big for an ordinary scale.
Examples
- 1
Vehicle capacity
The truck can carry up to five tonnes of sand.
- 2
Farm production
The farm produces about 200 tonnes of wheat a year.
- 3
Price measurement
Steel prices went up by $40 per tonne.
- 4
Carbon emissions
The company says it will cut its carbon emissions by one million tonnes by 2030.
- 5
Informal crowd
There were tonnes of people waiting outside the stadium.
Usage
tonnes of
a very large number or amount, in informal British English
Forms and spellings
2 forms open this card.
Main spelling
- tonnenoun
Forms
- tonnespluralnoun