Long ton
A
long ton is the name used in the
US for the unit called the "ton" in the
avoirdupois or
Imperial system of measurements, as used (alongside the
metric system) in the
United Kingdom and to some extent in other
Commonwealth countries. It is equal to 2240
pounds (approximately 1016
kilograms). It has some limited use in the US, most commonly in measuring the
displacement of
ships.
The standard ton in the US measurement system is the "short ton", equal to 2000 pounds (approximately 907.2 kg).
The spelling "tonne" denotes the metric ton of 1000 kilograms (approximately 2204.6 pounds).