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Convert Short Ton to Stone (ancient) (ton (US) to st (ancient)) instantly with accurate, readable results.
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Short ton (US ton) — a US customary unit of mass equal to 2000 pounds
It is defined as exactly 2000 avoirdupois pounds; since 1 lb = 0.45359237 kg exactly, 1 short ton = 907.18474 kg exactly. Used mainly in the United States for measuring large masses in freight, shipping, industry, agriculture, construction, vehicles, and commodities.
- Symbol: US ton, short ton
- System: US customary unit for mass
- Exact relations: 1 short ton = 2000 lb = 32,000 oz = 907.18474 kg
- Metric equivalents: 1 short ton ≈ 907.185 kg ≈ 0.907185 t
- Typical examples: a small car ~1.5 short tons; a pickup truck ~2.5 short tons; bulk gravel, coal, or grain often measured in short tons.
Stone (ancient) — a variable historical unit of mass
It was not a single fixed unit; in ancient and medieval use, a “stone” could mean a locally chosen trade weight, often varying by region, period, and commodity. Used historically for weighing goods such as wool, grain, meat, and other trade commodities, and for stone weights used as practical measuring standards.
- Symbol: stone, st
- System: Historical unit for mass; not a fixed SI or modern imperial standard in ancient use
- Common historical range: about 4 to 32 lb ≈ 1.814 to 14.515 kg, depending on context
- Modern reference point: the later British imperial stone is exactly 14 lb = 6.35029318 kg
- Typical examples: trade stones could be used for wool, grain, or livestock products; a “stone” in one market might differ from a “stone” in another; historical records should be interpreted by period and location.