This converter turns long tons into tonnes instantly, using the exact factor 1 long ton = 1.016046909 tonnes. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The long ton: 2,240 pounds, historically used in the UK and for shipping displacement. The metric ton: exactly 1,000 kilograms, used for freight and vehicle mass.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
long tons- The amount you are converting, measured in long tons
1.016046909- The exact number of tonnes in one long ton
tonnes- The converted result
How it works, step by step
- Enter the number of long tons you want to convert.
- The value is multiplied by 1.016046909, the exact conversion factor.
- The result is displayed in tonnes, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 long tons
Multiply 5 by 1.0160469. That gives 5.0802 tonnes. A quick sanity check: one long ton is larger than one tonne, so the number should get bigger — and it does.
Converting 72 long tons
72 × 1.0160469 = 73.1554 tonnes. Working backwards, 73.1554 ÷ 1.0160469 returns 72 long tons, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many tonnes are in one long ton?
Exactly 1.016046909. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert long tons to tonnes?
Tonnes = long tons × 1.016046909. To reverse it, divide instead: long tons = tonnes ÷ 1.016046909, which is the same as multiplying by 0.9842065276.
Is the long ton bigger than the tonne?
Yes. One long ton equals 1.01605 tonnes, so it is the larger unit.
Why does my answer differ slightly from other uk-tons to tonnes converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a long ton?
The long ton: 2,240 pounds, historically used in the UK and for shipping displacement.
What is a tonne?
The metric ton: exactly 1,000 kilograms, used for freight and vehicle mass.
Long Tons to tonnes reference table
| Long Tons | Tonnes |
|---|---|
| 0.5 ton | 0.508023 t |
| 1 ton | 1.016 t |
| 2 ton | 2.0321 t |
| 3 ton | 3.0481 t |
| 5 ton | 5.0802 t |
| 10 ton | 10.1605 t |
| 15 ton | 15.2407 t |
| 20 ton | 20.3209 t |
| 25 ton | 25.4012 t |
| 50 ton | 50.8023 t |
| 75 ton | 76.2035 t |
| 100 ton | 101.6047 t |
| 250 ton | 254.0117 t |
| 500 ton | 508.0235 t |
| 1000 ton | 1,016.05 t |
Exact factor: 1 long ton = 1.016046909 tonnes. Values rounded for display.