Nepedia
Back to Discover
Independent Reader
⚛️

Long ton

physical science Maturity 11-13 Next article →

A long ton is a way to measure weight. It is also called an imperial ton. This unit was made standard in the 13th century. One long ton is exactly 2,240 pounds. It is also 1,016.0 kilograms.

How do we get this number? It comes from a set of steps. First, one stone is 14 pounds. Next, one hundredweight is 8 stone. Finally, one long ton is 20 hundredweight. This math makes the big weight.

Do not mix this up with a short ton. A short ton is only 2,000 pounds. The long ton is 12% bigger. In the United States, people use long tons for big goods. They use them for iron ore and sulfur. They also use them to measure ships. This is called displacement. It shows how much weight a ship moves in water.

In fact, one long ton weighs the same as 35 cubic feet of salt water. A long ton was also used in a big treaty in 1922. That treaty set limits on warships. Battleships could not be more than 35,000 long tons.

184 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

More to explore

🔗 What's this?

Concepts mentioned in this article

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.