Microgram is abbreviated as ______.

Microgram is abbreviated as ______.

• A. mcg
• B. mg
• C. g
• D. kg

Answer: (A)

Microgram is a mass unit equal to one millionth of a gram. The common symbol is μg, but in plain text you’ll often see it written as mcg. That’s why mcg is the correct abbreviation here. The other options correspond to different scales: a milligram is 1/1000 of a gram, a gram is the base unit, and a kilogram is 1000 grams. So 1 mcg equals 0.001 mg or 0.000001 g; conversely, 1 mg = 1000 mcg, 1 g = 1,000,000 mcg, and 1 kg = 1,000,000,000 mcg.

Microgram is a mass unit equal to one millionth of a gram. The common symbol is μg, but in plain text you’ll often see it written as mcg. That’s why mcg is the correct abbreviation here. The other options correspond to different scales: a milligram is 1/1000 of a gram, a gram is the base unit, and a kilogram is 1000 grams. So 1 mcg equals 0.001 mg or 0.000001 g; conversely, 1 mg = 1000 mcg, 1 g = 1,000,000 mcg, and 1 kg = 1,000,000,000 mcg.