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Short Ton (US ton)

Also called: US ton, net ton, ton (US)

Definition: The short ton, or US ton, is a unit of mass equal to 2,000 pounds, which NIST lists as 907.1847 kilograms; it is the ordinary meaning of "ton" in the United States.

Updated October 31, 2026 · How we check facts

The short ton is the "ton" used in US trade for trucks, scrap, coal and freight. It weighs 2,000 pounds, or 32,000 ounces. NIST's SP 811 lists it as 907.1847 kg; since the pound is exactly 0.45359237 kg, 2,000 lb is 907.18474 kg.

Formula

short tons = pounds ÷ 2,000
kilograms = short tons × 907.18474

Example

A load of 15,000 lb is 15,000 ÷ 2,000 = 7.5 short tons, or 15,000 × 0.45359237 = 6,803.9 kg, which is 6.80 metric tons.

Short ton vs other tons

A long ton is 2,240 lb (12% heavier) and a metric ton is 2,204.62 lb (about 10.2% heavier). The guide how many pounds in a ton compares all three; convert with tons to pounds.

Calculate it

Free toolKg to Lbs ConverterKilograms to pounds and back, with lb + oz and stone.

Guides that explain it

Related terms

Long Ton (imperial ton)The long ton is a unit of mass equal to 2,240 pounds, which NIST lists as 1,016.047 kilograms; it is 12% heavier than the US short ton.Metric Ton (tonne)The metric ton, or tonne (symbol t), is a unit of mass equal to exactly 1,000 kilograms, which is about 2,204.62 pounds.Pound (lb)The pound is a unit of weight equal to 16 ounces; NIST lists the avoirdupois pound as 0.4535924 kilograms, or about 453.59 grams.Acre (ac)The acre is a US customary unit of area equal to exactly 43,560 square feet, 4,840 square yards or 160 square rods; NIST gives it as 4,046.8564224 square meters.Centimeter (cm)The centimeter is a metric unit of length equal to one hundredth of a meter (0.01 m); exactly 2.54 centimeters make one inch.Fluid Ounce (fl oz)A fluid ounce is a unit of volume; one US fluid ounce is 29.57353 milliliters, and 8 of them make a US cup. It is not the same as the ounce used to weigh things.Gram (g)The gram is a metric unit of mass equal to one thousandth of a kilogram, the SI base unit of mass; about 0.03527 ounces.Hectare (ha)The hectare is a metric unit of area equal to exactly 10,000 square meters, which is about 2.471 acres; it is accepted for use with the SI.

Sources

  1. NIST Guide to the SI (SP 811), Appendix B.8 — Factors for Units Listed Alphabetically