Units of Measure for Electronics and More
Part of the Electronics For Dummies Cheat Sheet (UK Edition)
These units of measure are used in many different areas, not just electronics. Note that in science and engineering, though, an upper case 'M' represents a million and a lower case 'm' represents a millionth.
| Number | Name | Scientific Notation | Prefix | Abbreviation |
|---|---|---|---|---|
| 1,000,000,000 | 1 billion | 109 | giga | G |
| 1,000,000 | 1 million | 106 | mega | M |
| 1,000 | 1 thousand | 103 | kilo | k |
| 100 | 1 hundred | 102 | – | – |
| 10 | ten | 101 | – | – |
| 1 | 1 | 100 | – | – |
| 0.1 | tenth | 10–1 | – | – |
| 0.01 | hundredth | 10–2 | – | – |
| 0.001 | thousandth | 10–3 | milli | m |
| 0.000001 | millionth | 10–6 | micro | µ |
| 0.000000001 | billionth | 10–9 | nano | n |
| 0.000000000001 | trillionth | 10–12 | pico | p |
