US short tons to Tonnes Converter

About this calculator

The US short ton (2,000 lb) is the standard "ton" used in American commerce, distinct from both the metric tonne (1,000 kg, used almost everywhere else in the world) and the British long ton (2,240 lb). The exact conversion is 1 short ton = 0.907184740 tonnes (907.18 kg), derived directly from the pound's legal definition of 0.45359237 kg.

The distinction matters commercially: US steel, coal, grain, and shipping industries quote tonnage in short tons, while international trade, shipping manifests, and virtually every other country report the same commodities in metric tonnes — getting the conversion wrong on a bulk cargo contract can mean a real discrepancy in tens of thousands of dollars.