Convert short tons (us) to long tons (uk) instantly.
Definition: A short ton is a unit of mass used mainly in the United States and is equal to 2,000 pounds, or about 907.18474 kilograms.
History/origin: The short ton developed from the imperial and customary pound-based systems in North America, where it became standard for trade, industry, and transportation.
Current use: Short tons are used in the United States for industrial shipments, construction materials, mining, and freight calculations.
Definition: The long ton is a British imperial ton equal to 2,240 lb. It is about 1,016.0469 kg, making it heavier than both the US short ton and the metric ton.
History/origin: British trade and shipping used the 2,240-pound ton for centuries, especially where hundredweight-based accounting shaped heavy-goods measurement.
Current use: Long tons are mostly found in older UK shipping records, naval displacement, historical industry data, maritime references, and conversions from legacy imperial sources.
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