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Convert Microgram to Stone (µg to st) 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.
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.
Stone (st) — an imperial unit of mass equal to 14 pounds
It is defined as exactly 14 avoirdupois pounds; since 1 lb = 0.45359237 kg exactly, 1 st = 6.35029318 kg exactly. Used mainly in the United Kingdom and Ireland for measuring human body weight.
- Symbol: st
- System: Imperial unit for mass
- Exact relations: 1 st = 14 lb = 224 oz = 6.35029318 kg
- Metric equivalents: 1 st ≈ 6.35029 kg ≈ 6350.29 g
- Typical examples: a person weighing 10 st is 140 lb; a small adult ~8 st; a larger adult ~15 st.