US ton (short ton) to Kilogram

One US short ton equals exactly 2,000 pounds (approximately 907 kg). To convert short tons to kilograms, multiply by 907.185. To convert to metric tonnes, multiply by 0.907.

In HVAC, a "ton of refrigeration" is a unit of cooling power equal to the heat absorbed by melting one short ton (2,000 lbs) of ice in 24 hours — approximately 3.517 kilowatts or 12,000 BTU/hour. A 3-ton AC unit has 3 × 12,000 = 36,000 BTU/h of cooling capacity. This has nothing to do with the weight of the equipment.

An average person in a developed country eats roughly 2–2.5 lbs of food per day (about 1 short ton per year). Over a 75-year lifespan, that is approximately 75 short tons (68 metric tonnes) of food — enough to fill about three standard shipping containers. Broken down: roughly 8 tonnes of fruit and vegetables, 5 tonnes of meat, 6 tonnes of grain products, 8 tonnes of dairy, and the rest in fats, sugars, and beverages. The water required to produce that food is about 50,000 tonnes — 700 times the food weight itself.

Short tons remain standard in US coal mining and electricity generation, steel and ferrous scrap recycling, agricultural commodities (grain, fertiliser), and construction materials (gravel, asphalt). International trade documentation typically requires conversion to metric tonnes for global contracts.

A Honda Civic (2024 base model) has a curb weight of almost exactly 2,000 lbs — one short ton. A standard pallet of bottled water (84 cases of 24 × 500 mL bottles) weighs about 2,000 lbs. A cubic yard of dry sand weighs roughly one short ton. A grand piano ranges from 700 to 1,200 lbs, so you need about two of them. A typical adult horse weighs 900–1,100 lbs, so two average horses together are close to one short ton.

One kilogram equals approximately 2.20462 pounds. For quick mental conversion, multiplying kg by 2.2 gives a close result. To go the other way, divide pounds by 2.2 (or multiply by 0.4536) to get kilograms.

Kilograms (kg) are the metric unit of mass used in most of the world; pounds (lbs) are the US customary and imperial unit. 1 kg ≈ 2.205 lbs. Body weight is expressed in kg in most countries and in lbs in the United States, which causes frequent confusion in medical, fitness, and travel contexts.

The original kilogram was defined as the mass of a physical platinum–iridium cylinder (the International Prototype Kilogram, or IPK) stored in France. The problem was that the IPK's mass drifted over time relative to official copies. In 2019, the kilogram was redefined using the Planck constant — a fundamental constant of nature — making it stable, universally reproducible, and independent of any physical object.

The kilogram is used to express body weight, grocery and produce weight, luggage allowances on flights (typically 20–30 kg checked baggage), sports equipment weight limits, and most commercial goods. In science and engineering, it is the base unit for force (newtons), pressure (pascals), and energy (joules) calculations.

One liter of pure water weighs almost exactly 1 kilogram at 4°C (the temperature of maximum density). At room temperature (20°C) it is 0.998 kg — effectively 1 kg for most purposes. This relationship between liter and kilogram is not a coincidence: the liter was originally defined to make it exact.