long ton (UK) (long ton)
1 long ton (UK) = 1,016.0469088 kilograms
What is long ton (UK)?
A long ton is a unit of mass historically used in the United Kingdom, equal to 2,240 pounds. It is used in shipping, naval architecture, and some industrial contexts in the UK.
Notes: Imperial unit
Real-world uses
The long ton was historically used in British shipping, coal mining, and iron/steel trade. Naval vessel displacement is sometimes still quoted in long tons. It occasionally appears in older British engineering specifications and historical trade records.
History
The long ton of 2,240 pounds derives from the traditional English system of 20 hundredweight (each 112 lb). It was the standard British ton until metrication in the 1970s largely replaced it with the metric tonne in commerce.
Common mistakes
Confusing the long ton (2,240 lb / 1,016 kg) with the short ton (2,000 lb / 907 kg) or the metric tonne (2,205 lb / 1,000 kg). This 12% difference can cause major commercial discrepancies.
When is this conversion used?
Converting between long ton (UK) and kilogram is common when working across metric and imperial systems, such as international trade, travel between countries with different measurement standards, or following instructions from a different region. Body weight, grocery items, and luggage limits are commonly expressed in kilograms in most countries and pounds in the US and UK, making this one of the most frequently needed mass conversions.
How to convert long ton (UK) to kilogram
To convert long ton (UK) to kilogram, multiply the value by 1,016.0469088.
Conversion formula (from base unit)
x * 1016.0469088
Measurement standards
The kilogram is defined by fixing the Planck constant to exactly 6.62607015 × 10⁻³⁴ joule-seconds, as established at the 26th General Conference on Weights and Measures in 2018. This ended the last SI definition based on a physical artefact.
Did you know?
The International Prototype of the Kilogram, a platinum-iridium cylinder stored near Paris since 1889, was found to have drifted by about 50 micrograms relative to its copies over a century — roughly the mass of a fingerprint.
| long tons (UK) | kilograms |
|---|---|
| 0.1 | 101.60469088 |
| 0.5 | 508.0234544 |
| 1 | 1,016.0469088 |
| 2 | 2,032.0938176 |
| 5 | 5,080.234544 |
| 10 | 10,160.469088 |
| 25 | 25,401.17272 |
| 50 | 50,802.34544 |
| 100 | 101,604.69088 |
| 250 | 254,011.7272 |
| 500 | 508,023.4544 |
| 1,000 | 1,016,046.9088 |
Common values
| long tons (UK) | kilograms | |
|---|---|---|
| A paperclip | 9.842065e-07 long tons (UK) | 0.001 kilograms |
| A smartphone | 0.00017224 long tons (UK) | 0.175 kilograms |
| A bag of sugar | 0.00098421 long tons (UK) | 1 kilogram |
| Average adult human | 0.06889446 long tons (UK) | 70 kilograms |
| A small car | 1.18104783 long tons (UK) | 1,200 kilograms |
Full long ton (UK) conversion table
| Unit | Value | Factor |
|---|---|---|
| kilogram | 1 long ton = 1,016.0469088 kg | × 1,016.0469088 |
| gram | 1 long ton = 1,016,046.9088 g | × 1,016,046.9088 |
| pound | 1 long ton = 2,240 lb | × 2,240 |
| ounce | 1 long ton = 35,840 oz | × 35,840 |
| tonne | 1 long ton = 1.01604691 t | × 1.01604691 |
| milligram | 1 long ton = 1.016047e+09 mg | × 1.016047e+09 |
| microgram | 1 long ton = 1.016047e+12 µg | × 1.016047e+12 |
| stone | 1 long ton = 160 st | × 160 |
| short ton (US) | 1 long ton = 1.12 short ton | × 1.12 |