The milligram equals one thousandth of a gram. It is the dosing unit for most oral medications. A standard paracetamol tablet contains 500 mg. The daily recommended intake of iron for adult men is 8 mg, for women 18 mg. Micrograms (ยตg) are used for even smaller quantities like vitamin D.
Real-world: A paracetamol tablet is 500 mg. Daily iron intake: 8 mg (men) / 18 mg (women). Aspirin for heart protection: 75โ100 mg daily.
Read full milligram reference โThe US short ton equals 2000 pounds or 907.18474 kilograms. It is the standard tonnage unit in the United States for freight, coal and industrial weights. It is 9.3% smaller than the metric ton โ a meaningful gap in large-volume contracts.
Real-world: Max legal gross weight for a US 18-wheeler is 40 short tons (36.3 t). US coal output is quoted in short tons.
Read full us ton reference โ