Convert Pounds to Long Tons
1 pound (lb) equals 0.0004464285714 long tons (ton (UK)).
1 lb = 0.0004464285714 ton (UK)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pound to long ton converter to paste a column from Excel.
How to Convert Pound to Long Ton
- 1 lb = 0.0004464285714 ton (UK)
- 1 ton (UK) = 2240 lb
- Example: convert 15 lb to ton (UK): 15 lb = 15 × 0.0004464285714 ton (UK) = 0.006696428571 ton (UK)
Reference conditions. lb: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement). ton (UK): Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
ton (UK) = lb ÷ 2240
Derivation from SI units:
- 1 lb = 0.45359237 kg (exact, 1959 international agreement)
- 1 long ton = 2240 lb = 1016.0469088 kg (exact)
- 1 lb = 0.45359237 kg ÷ 1016.0469088 kg per ton (UK) = 0.0004464285714286 ton (UK)
Both units are defined exactly, so the factor is exact. Pound definition: pound; Long Ton definition: long ton.
Worked examples
- A reading of 20 lb converts to 0.008928571429 ton (UK).
20 lb × 0.0004464285714 = 0.008928571429 ton (UK) - A value of 140 lb is 0.0625 ton (UK).
140 lb × 0.0004464285714 = 0.0625 ton (UK)
Pound to Long Ton conversion table
| Pounds (lb) | Long Tons (ton (UK)) |
|---|---|
| 0.25 lb | 0.0001116071429 ton (UK) |
| 0.5 lb | 0.0002232142857 ton (UK) |
| 1 lb | 0.0004464285714 ton (UK) |
| 2 lb | 0.0008928571429 ton (UK) |
| 3 lb | 0.001339285714 ton (UK) |
| 5 lb | 0.002232142857 ton (UK) |
| 10 lb | 0.004464285714 ton (UK) |
| 15 lb | 0.006696428571 ton (UK) |
| 20 lb | 0.008928571429 ton (UK) |
| 25 lb | 0.01116071429 ton (UK) |
| 30 lb | 0.01339285714 ton (UK) |
| 40 lb | 0.01785714286 ton (UK) |
| 50 lb | 0.02232142857 ton (UK) |
| 100 lb | 0.04464285714 ton (UK) |
| 120 lb | 0.05357142857 ton (UK) |
| 130 lb | 0.05803571429 ton (UK) |
| 140 lb | 0.0625 ton (UK) |
| 150 lb | 0.06696428571 ton (UK) |
| 160 lb | 0.07142857143 ton (UK) |
| 170 lb | 0.07589285714 ton (UK) |
| 180 lb | 0.08035714286 ton (UK) |
| 200 lb | 0.08928571429 ton (UK) |
| 220 lb | 0.09821428571 ton (UK) |
| 250 lb | 0.1116071429 ton (UK) |
| 300 lb | 0.1339285714 ton (UK) |
Where it's used
Pounds are used for body weight and food in the US, while long tons appear in ship displacement and deadweight tonnage. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Pound to other weight and mass units
| Conversion | 1 lb equals |
|---|---|
| pound to kilogram | 0.45359237 kg |
| pound to gram | 453.59237 g |
| pound to milligram | 453592.37 mg |
| pound to microgram | 453592370 µg |
| pound to metric ton | 0.00045359237 t |
| pound to ounce | 16 oz |
| pound to stone | 0.07142857143 st |
| pound to short ton | 0.0005 ton (US) |
| pound to long ton | 0.0004464285714 ton (UK) |
| pound to grain | 7000 gr |
| pound to troy ounce | 14.58333333 oz t |
| pound to carat | 2267.96185 ct |
Frequently asked questions
How many long tons are in 1 pound?
1 lb = 0.0004464285714 ton (UK).
How do I convert pounds to long tons?
Multiply the value in lb by 0.0004464285714, or divide it by 2240. For example, 15 lb × 0.0004464285714 = 0.006696428571 ton (UK).
Is the lb to ton (UK) conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound (avoirdupois) (lb)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ton, long (2240 lb)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Pounds to Long Tons. Retrieved October 17, 2026, from https://scientificconverters.com/mass/pounds-to-long-tons/
IEEE
Scientific Converters, "Convert Pounds to Long Tons," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/pounds-to-long-tons/