Microgram
Key Stage 4
Meaning
A microgram (µg) is a unit of mass which is 1000,000,000 times smaller than the SI Unit for mass, the kilogram.
About Microgram
- A microgram is shortened to µg with the Greek letter µ (pronounced mew) with a lower case g.
- Micro refers to one billionth as there are one billion micrograms in a gram.
- A microgram is 10-9 kilograms.
- Micrograms are usually used to describe doses of drugs.
Converting to Milligrams
| Unit | To convert | Micrograms |
| 1 megagram (1Mg) | Convert to micrograms x1012 | 1x1012µg |
| 1 kilogram (1kg) | Convert to micrograms x109 | 1x109µg |
| 1 gram (1g) | Convert to micrograms x106 | 1x106µg |
| 1 milligram 1(mg) | Convert to micrograms x103 | 1x103µg |
| 1 microgram 1(µg) | Convert to micrograms x1 | 1µg |
| 1 nanogram 1(ng) | Convert to micrograms x10-3. | 1x10-3µg |