Imperial ton (long ton) to Metric ton
ton
t
Conversion History
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|---|---|---|
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Quick Reference Table (Imperial ton (long ton) to Metric ton)
| Imperial ton (long ton) (ton) | Metric ton (t) |
|---|---|
| 0.5 | 0.5080234544 |
| 1 | 1.0160469088 |
| 2 | 2.0320938176 |
| 5 | 5.080234544 |
| 10 | 10.160469088 |
| 20 | 20.320938176 |
About Imperial ton (long ton) (ton)
The imperial ton, also called the long ton, is a unit of mass equal to 2,240 pounds (approximately 1,016 kg). It was the standard large-mass unit in the British Empire for bulk goods such as coal, grain, and shipping capacity. The long ton is still used in some UK industries (particularly shipping tonnage and historical contexts) but has largely been replaced by the metric tonne (1,000 kg) for commercial and scientific purposes. The difference between the long ton (1,016 kg), metric tonne (1,000 kg), and US short ton (907 kg) is roughly 10–12%, which matters in trade and engineering calculations.
A double-decker bus weighs about 8 long tons. A coal wagon in Victorian railways held about 10 long tons.
About Metric ton (t)
The metric ton (or tonne, symbol t) is equal to exactly 1,000 kilograms (1 Mg in SI notation). It is the standard large-mass unit in science, industry, and international trade. The metric ton should not be confused with the US short ton (907 kg) or the imperial long ton (1,016 kg), though all three share the word "ton". The metric ton is used for vehicle curb weight, cargo capacity, CO₂ emissions per year, and bulk commodity pricing. A compact car weighs roughly 1.2–1.5 t; a fully loaded semi-truck can weigh up to 40 t.
A medium-sized car weighs about 1.5 t. A standard shipping container (empty) weighs roughly 2.2 t.
Imperial ton (long ton) – Frequently Asked Questions
What was the heaviest single object ever weighed?
The revolving service structure at NASA's Kennedy Space Center Launch Complex 39B weighed approximately 2,423 long tons (2,462 metric tonnes) when it was moved on its rail system. In construction, the Troll A offshore gas platform (North Sea) had a concrete substructure weighing about 656,000 tonnes — the heaviest object ever moved by humanity. For natural objects, the heaviest single organism is the Pando aspen grove in Utah at an estimated 6,000 tonnes, though it is debatable whether a clonal colony counts as one "object."
Is the long ton still used?
The long ton persists in some specialist UK contexts — notably maritime shipping displacement (warship displacement is often quoted in long tons), some historical industrial records, and a few US sectors such as ferrous scrap metal trading. For most purposes, the metric tonne has replaced it in the UK.
How does the long ton compare to the metric tonne?
A long ton is 1,016.05 kg, which is about 1.6% heavier than a metric tonne (1,000 kg). For rough mental conversion, they are close enough that long ton ≈ metric tonne — but in bulk commodity contracts, the 16 kg difference per tonne adds up significantly at large volumes.
Why does the UK use a different ton than the US?
Both derived from the historical English ton of 2,240 lbs (based on 20 hundredweight of 112 lbs each). The US customary system later redefined the hundredweight as 100 lbs, producing a short ton of 2,000 lbs, while the UK retained the 112-lb hundredweight and the 2,240-lb long ton.
What is a deadweight ton?
Deadweight tonnage (DWT) is a shipping measure of how much weight a vessel can carry — cargo, fuel, crew, provisions, and water — expressed in metric tonnes or long tons depending on convention. A Panamax cargo ship typically has a deadweight of 50,000–80,000 metric tonnes. DWT is distinct from displacement tonnage (the weight of water displaced by the ship itself).
Metric ton – Frequently Asked Questions
What is the difference between a metric ton, a short ton, and a long ton?
The metric ton (tonne) is 1,000 kg (2,205 lbs). The US short ton is 2,000 lbs (907 kg). The imperial long ton used in the UK is 2,240 lbs (1,016 kg). All three are called "ton" in common speech, which causes significant confusion in trade and engineering contexts. When precision matters, "tonne" or "metric ton" should be specified.
Is a tonne the same as a ton?
"Tonne" specifically refers to the metric ton (1,000 kg). "Ton" is ambiguous — it may mean metric, short, or long ton depending on context and country. In scientific and international contexts, tonne is preferred for clarity. In the US, "ton" almost always means the short ton (2,000 lbs).
How many kilograms are in a metric ton?
Exactly 1,000 kilograms equal one metric ton (tonne). Equivalently, 1 tonne = 1 Mg (megagram) in strict SI notation, though tonne is the accepted non-SI unit for this mass.
Why is CO₂ measured in tonnes?
CO₂ emissions are measured in metric tonnes because human and industrial activities produce millions to billions of tonnes per year — figures that would be unwieldy in kilograms. A typical passenger car emits roughly 4 tonnes of CO₂ per year; global emissions are around 37 billion tonnes annually.
How heavy is a metric ton in everyday terms?
One metric ton is 1,000 kg — roughly the mass of a small hatchback car, about 10 average adults, or a standard cubic meter of water. A single African elephant weighs approximately 5–6 tonnes; a blue whale can exceed 150 tonnes.