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Convert Scruple to Microgram (s to µg) instantly with accurate, readable results.
Use our Mass Unit Converter to convert between grams, kilograms, pounds, ounces, and other weight units instantly. Designed for cooking, science, fitness, and engineering needs, this unit conversion tool offers accurate results between metric and imperial systems. Whether you’re tracking body weight, measuring ingredients, or handling heavy machinery, our mass unit conversion calculator has you covered.
Scruple (℈) — an apothecaries’ unit of mass equal to 20 grains
It is defined as exactly 20 grains, or one third of an apothecaries’ dram; since 1 grain = 64.79891 mg exactly, 1 scruple = 1.2959782 g exactly. Used historically in pharmacy, medicine, and apothecaries’ weight systems, but now mostly encountered in historical references.
- Symbol: ℈
- System: Apothecaries’ unit for mass
- Exact relations: 1 scruple = 20 gr = 1/3 apothecaries’ dram = 1.2959782 g
- Metric equivalents: 1 scruple = 1.2959782 g ≈ 0.00129598 kg
- Typical examples: historical medicine recipes may list doses in scruples; 3 scruples equals 1 apothecaries’ dram; 1 scruple is a little heavier than 1 gram.
Microgram (µg) — a very small SI unit of mass
It is defined as one millionth of a gram, or one billionth of a kilogram, the SI base unit for mass. Used worldwide for measuring extremely small masses in medicine, nutrition, chemistry, toxicology, laboratory analysis, and trace substances.
- Symbol: µg
- System: SI unit for mass; decimal submultiple of the kilogram
- Exact relations: 1 µg = 0.001 mg = 0.000001 g = 0.000000001 kg
- Imperial equivalents (derived from 1 lb = 0.45359237 kg exactly): 1 µg ≈ 0.000000035274 oz ≈ 0.00000000220462 lb
- Typical examples: a vitamin B12 dose ~500 µg; a folic acid tablet ~400 µg; trace contaminants in food or water often measured in µg.