Convert Tonne to Long ton
1 tonne = 0.9842065 long ton (ton (UK)). For example, 10 tonne = 9.842065 long ton and 100 tonne = 98.42065 long ton. Type any value below to convert tonne to long ton both ways — it runs entirely in your browser.
Quick answer: Tonne to Long ton
1 Tonne = 0.9842065 Long ton (t → ton (UK)). To convert tonne to long ton, multiply by 0.9842065. To convert long ton to tonne, multiply by 1.016047. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common tonne-to-long ton questions.
How to convert Tonne to Long ton
To convert tonne to long ton, multiply the number of tonne by the conversion factor 0.9842065, because 1 t = 0.9842065 ton (UK). The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 ton (UK) = 1.016047 t, so you divide by 0.9842065 (or multiply by 1.016047) to turn long ton back into tonne.
ton (UK) = t × 0.9842065 ·
t = ton (UK) × 1.016047
- Write down the value you want to convert, in tonne.
- Multiply it by 0.9842065.
- The result is the same area/length/quantity expressed in long ton.
Tonne to Long ton — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 tonne is 4.921033 long ton because 5 t × 0.9842065 = 4.921033 ton (UK).
| Tonne | Calculation | Long ton |
|---|---|---|
| 1 t | 1 t × 0.9842065 = 0.9842065 ton (UK) | 0.9842065 ton (UK) |
| 2 t | 2 t × 0.9842065 = 1.968413 ton (UK) | 1.968413 ton (UK) |
| 3 t | 3 t × 0.9842065 = 2.95262 ton (UK) | 2.95262 ton (UK) |
| 5 t | 5 t × 0.9842065 = 4.921033 ton (UK) | 4.921033 ton (UK) |
| 7 t | 7 t × 0.9842065 = 6.889446 ton (UK) | 6.889446 ton (UK) |
| 10 t | 10 t × 0.9842065 = 9.842065 ton (UK) | 9.842065 ton (UK) |
| 12 t | 12 t × 0.9842065 = 11.81048 ton (UK) | 11.81048 ton (UK) |
| 15 t | 15 t × 0.9842065 = 14.7631 ton (UK) | 14.7631 ton (UK) |
| 20 t | 20 t × 0.9842065 = 19.68413 ton (UK) | 19.68413 ton (UK) |
| 25 t | 25 t × 0.9842065 = 24.60516 ton (UK) | 24.60516 ton (UK) |
| 50 t | 50 t × 0.9842065 = 49.21033 ton (UK) | 49.21033 ton (UK) |
| 100 t | 100 t × 0.9842065 = 98.42065 ton (UK) | 98.42065 ton (UK) |
Common Tonne to Long ton conversions
These are the tonne-to-long ton values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 tonne = 0.9842065 long ton
- 2 tonne = 1.968413 long ton
- 2.5 tonne = 2.460516 long ton
- 3 tonne = 2.95262 long ton
- 4 tonne = 3.936826 long ton
- 5 tonne = 4.921033 long ton
- 6 tonne = 5.905239 long ton
- 7 tonne = 6.889446 long ton
- 8 tonne = 7.873652 long ton
- 9 tonne = 8.857859 long ton
- 10 tonne = 9.842065 long ton
- 12 tonne = 11.81048 long ton
- 15 tonne = 14.7631 long ton
- 20 tonne = 19.68413 long ton
- 25 tonne = 24.60516 long ton
- 30 tonne = 29.5262 long ton
- 50 tonne = 49.21033 long ton
- 75 tonne = 73.81549 long ton
- 100 tonne = 98.42065 long ton
- 200 tonne = 196.8413 long ton
- 500 tonne = 492.1033 long ton
- 1000 tonne = 984.2065 long ton
Tonne to Long ton conversion chart (both directions)
The chart below converts tonne to long ton and long ton to tonne side by side, so it works whichever way you need. 1 tonne = 0.9842065 long ton, and 1 long ton = 1.016047 tonne.
| Tonne → Long ton | Long ton → Tonne |
|---|---|
| 0.25 t = 0.2460516 ton (UK) | 0.25 ton (UK) = 0.2540117 t |
| 0.5 t = 0.4921033 ton (UK) | 0.5 ton (UK) = 0.5080235 t |
| 1 t = 0.9842065 ton (UK) | 1 ton (UK) = 1.016047 t |
| 2 t = 1.968413 ton (UK) | 2 ton (UK) = 2.032094 t |
| 3 t = 2.95262 ton (UK) | 3 ton (UK) = 3.048141 t |
| 4 t = 3.936826 ton (UK) | 4 ton (UK) = 4.064188 t |
| 5 t = 4.921033 ton (UK) | 5 ton (UK) = 5.080235 t |
| 6 t = 5.905239 ton (UK) | 6 ton (UK) = 6.096281 t |
| 7 t = 6.889446 ton (UK) | 7 ton (UK) = 7.112328 t |
| 8 t = 7.873652 ton (UK) | 8 ton (UK) = 8.128375 t |
| 9 t = 8.857859 ton (UK) | 9 ton (UK) = 9.144422 t |
| 10 t = 9.842065 ton (UK) | 10 ton (UK) = 10.16047 t |
| 12 t = 11.81048 ton (UK) | 12 ton (UK) = 12.19256 t |
| 15 t = 14.7631 ton (UK) | 15 ton (UK) = 15.2407 t |
| 20 t = 19.68413 ton (UK) | 20 ton (UK) = 20.32094 t |
| 25 t = 24.60516 ton (UK) | 25 ton (UK) = 25.40117 t |
| 30 t = 29.5262 ton (UK) | 30 ton (UK) = 30.48141 t |
| 40 t = 39.36826 ton (UK) | 40 ton (UK) = 40.64188 t |
| 50 t = 49.21033 ton (UK) | 50 ton (UK) = 50.80235 t |
| 75 t = 73.81549 ton (UK) | 75 ton (UK) = 76.20352 t |
| 100 t = 98.42065 ton (UK) | 100 ton (UK) = 101.6047 t |
| 150 t = 147.631 ton (UK) | 150 ton (UK) = 152.407 t |
| 200 t = 196.8413 ton (UK) | 200 ton (UK) = 203.2094 t |
| 250 t = 246.0516 ton (UK) | 250 ton (UK) = 254.0117 t |
| 500 t = 492.1033 ton (UK) | 500 ton (UK) = 508.0235 t |
| 1000 t = 984.2065 ton (UK) | 1000 ton (UK) = 1,016.047 t |
Tonne vs Long ton: which is bigger?
A long ton is the larger unit: one long ton equals 1.016047 tonnes. Put another way, you need 1.016047 tonnes to make a single long ton.
What is a Tonne? History, origin and usage
The word "tonne" comes from the tun, a large medieval wine cask. When the metric system needed a bulk unit, the name was borrowed and the value made round: exactly one thousand kilograms. It was formally recognised as a unit for use with SI in 1879 and remains accepted today, even though its strictly SI name would be the megagram.
Tonnes measure freight, shipping containers, harvests, vehicle weight limits, industrial output and carbon emissions. Almost every country outside the United States means the metric tonne when it says "ton".
Nobody says "megagram", even though that is the coherent SI name for the same mass. In writing, "tonne" or "metric ton" is used to distinguish it from the American short ton and the British long ton, which are both different — and different from each other.
What is a Long ton? History, origin and usage
The long ton is the original English ton, and it traces back to the tun — a wine cask big enough to hold roughly 252 gallons. A full tun weighed in the region of 2,240 pounds, and that number stuck as the ton of British trade. It is built from twenty hundredweight of 112 pounds, which in turn is eight stone.
The long ton is the traditional unit of British shipping, mining and heavy industry, and it is still used for ship displacement and some bulk commodity contracts. In everyday British life it has largely given way to the metric tonne, which happens to be a very close match in size.
A long ton is exactly 1.12 short tons, and it sits only slightly above the metric tonne — close enough that the two are often confused, and far enough apart to matter on a shipload. British sources sometimes call it the imperial or gross ton.
Convert 1 Tonne to other units
It can help to see a tonne next to the other units it is commonly compared with. One tonne (t) is equal to:
| 1 Tonne equals | Unit |
|---|---|
| 1,000 kg | Kilogram |
| 1,000,000 g | Gram |
| 1,000,000,000 mg | Milligram |
| 1,000,000,000,000 µg | Microgram |
| 10 q | Quintal |
| 2,204.623 lb | Pound |
| 35,273.96 oz | Ounce |
| 157.473 st | Stone |
| 1.102311 ton (US) | Short ton |
| 0.9842065 ton (UK) | Long ton |
| 32,150.75 oz t | Troy ounce |
| 15,432,360 gr | Grain |
| 5,000,000 ct | Carat |
Convert 1 Long ton to other units
One long ton (ton (UK)) is equal to:
| 1 Long ton equals | Unit |
|---|---|
| 1,016.047 kg | Kilogram |
| 1,016,047 g | Gram |
| 1,016,047,000 mg | Milligram |
| 1,016,047,000,000 µg | Microgram |
| 1.016047 t | Tonne |
| 10.16047 q | Quintal |
| 2,240 lb | Pound |
| 35,840 oz | Ounce |
| 160 st | Stone |
| 1.12 ton (US) | Short ton |
| 32,666.67 oz t | Troy ounce |
| 15,680,000 gr | Grain |
| 5,080,235 ct | Carat |
Tips for converting Tonne to Long ton
- To go from tonne to long ton, multiply by 0.9842065; to go back, divide by 0.9842065 (or multiply by 1.016047).
- For a quick mental estimate, remember that 1 tonne ≈ 0.9842065 long ton, so 10 tonne ≈ 9.842065 long ton.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Tonne to Long ton converter
Type a number into the Tonne field and the equivalent in Long ton appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Long ton field to convert the other way (long ton to tonne). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 t = 0.9842065 ton (UK)), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for tonne-to-long ton conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary weight units. The 1959 international yard-and-pound agreement fixes the international avoirdupois pound at exactly 0.453 592 37 kilogram, and the ounce, stone, grain and both tons are defined as exact fractions or multiples of that pound — so every imperial weight on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
Weight factors here are exact, anchored to the kilogram: the international pound is exactly 0.45359237 kg, a stone is 14 pounds, a short ton is 2,000 pounds and a long ton is 2,240, a grain is 1/7000 of a pound and a metric carat is exactly 200 mg. So the live tool and every number on this page always agree.
Frequently asked questions
- How many long ton are in 1 tonne?
- 1 tonne = 0.9842065 long ton (ton (UK)). To convert any number of tonne to long ton, multiply by 0.9842065.
- How do I convert tonne to long ton?
- Multiply the number of tonne by 0.9842065. For example, 10 tonne = 10 × 0.9842065 = 9.842065 long ton, and 25 tonne = 24.60516 long ton.
- How many tonne are in 1 long ton?
- 1 long ton = 1.016047 tonne. So to convert long ton back to tonne, multiply by 1.016047.
- What is the formula to convert tonne to long ton?
- long ton = tonne × 0.9842065. The reverse formula is tonne = long ton × 1.016047.
- How much is 100 tonne in long ton?
- 100 tonne = 98.42065 long ton. (And 1000 tonne = 984.2065 long ton.)
- Which is bigger, a tonne or a long ton?
- A long ton is larger: 1 long ton = 1.016047 tonne.
- Is this tonne to long ton converter accurate?
- Yes — every value is computed from the exact 0.9842065 ton (UK) per t factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert long ton to tonne too?
- Yes. The converter works both ways — enter a value in either field. 1 long ton = 1.016047 tonne.