How many milligrams are equal to 1000 micrograms?

How many milligrams are equal to 1000 micrograms?

• A. 1 mg
• B. 1000 mg
• C. 0.001 mg
• D. 0.1 mg

Answer: (A)

Understanding metric prefixes and unit conversions between micrograms and milligrams is the key idea. There are 1000 micrograms in one milligram, so 1 mg = 1000 µg. Therefore, 1000 micrograms equals 1 milligram. You can see the math: 1000 µg × (1 mg / 1000 µg) = 1 mg, and the microgram unit cancels out. The other amounts correspond to different magnitudes: 1000 mg would be 1,000,000 µg, which is far larger; 0.001 mg is 1 µg; 0.1 mg is 100 µg.

Understanding metric prefixes and unit conversions between micrograms and milligrams is the key idea. There are 1000 micrograms in one milligram, so 1 mg = 1000 µg. Therefore, 1000 micrograms equals 1 milligram. You can see the math: 1000 µg × (1 mg / 1000 µg) = 1 mg, and the microgram unit cancels out.

The other amounts correspond to different magnitudes: 1000 mg would be 1,000,000 µg, which is far larger; 0.001 mg is 1 µg; 0.1 mg is 100 µg.