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Convert Obolus to Short Ton (ob to ton (US)) instantly with accurate, readable results.
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Obolus (obol) — a historical unit of mass equal to 10 grains
It is commonly treated as half a scruple, or 10 grains, in historical Roman and apothecaries’ weight contexts; because the obolus was also a coin and ancient weight term, its exact value can vary by period and region. Used mainly in historical medicine, pharmacy, numismatics, and references to ancient or apothecaries’ measures.
- Symbol: obol, obolus
- System: Historical Roman and apothecaries’ unit for mass
- Exact relations: 1 obolus = 1/2 scruple = 10 gr = 647.9891 mg
- Metric equivalents: 1 obolus = 0.6479891 g ≈ 0.000647989 kg
- Typical examples: historical prescriptions may mention oboli; 2 oboli equals scruple; 1 obolus is a little less than 2/3 of a gram.
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.