International System of Units (S.I.) Multiples.
The International System of Units contains a number of prefixes which correspond with the relevant multiplication factors of a given unit. The table below contains these prefixes.
| Prefix | Symbol | Factor |
|---|---|---|
| peta | P | Â 1015 |
| tera | T | Â 1012 |
| giga | G | Â 109 |
| mega | M | Â 106 |
| kilo | k | Â 103 |
| hecto | h | Â 102 |
| deca | da | Â 101 |
| deci | d | Â 10-1 |
| centi | c | Â 10-2 |
| milli | m | Â 10-3 |
| micro | μ |  10-6 |
| nano | n | Â 10-9 |
| pico | p | Â 10-12 |
| femto | f | Â 10-15 |
| atto | a | Â 10-18 |