SI Unit Prefixes
SI Unit Prefixes
| Prefix | Symbol | 10n | short scale |
| yotta | Y | 1024 | Septillion |
| zetta | Z | 1021 | Sextillion |
| exa | E | 1018 | Quintillion |
| peta | P | 1015 | Quadrillion |
| tera | T | 1012 | Trillion |
| giga | G | 109 | Billion |
| mega | M | 106 | Million |
| kilo | k | 103 | Thousand |
| hecto | h | 102 | Hundred |
| deca | da | 101 | Ten |
| 100 | One | ||
| deci | d | 10-1 | Tenth |
| centi | c | 10-2 | Hundredth |
| milli | m | 10-3 | Thousandth |
| micro | μ | 10-6 | Millionth |
| nano | n | 10-9 | Billionth |
| pico | p | 10-12 | Trillionth |
| femto | f | 10-15 | Quadrillionth |
| atto | a | 10-18 | Quintillionth |
| zepto | z | 10-21 | Sextillionth |
| yocto | y | 10-24 | Septillionth |
