| Prefix | Symbol | Numerical Value |
| deca | da | ten |
| hecto | h | hundred |
| kilo | k | thousand |
| mega | M | million |
| giga | G | 109 |
| tera | T | 1012 |
| peta | P | 1015 |
| exa | E | 1018 |
| zetta | Z | 1021 |
| yotta | Y | 1024 |
| deci | d | tenth |
| centi | c | hundredth |
| milli | m | thousandth |
| micro | µ | millionth |
| nano | n | 10−9 |
| pico | p | 10−12 |
| femto | f | 10−15 |
| atto | a | 10−18 |
| zepto | z | 10−21 |
| yocto | y | 10−24 |