| Name | Symbol | Base 10 Power | Short Scale Word | Long Scale Word | Is from SI | Unit System |
|---|---|---|---|---|---|---|
| atto | a | -18 | quintillionth | trillionth | Yes | SI |
| exa | E | 18 | quintillion | trillion | Yes | SI |
| femto | f | -15 | quadrillionth | billiardth | Yes | SI |
| peta | P | 15 | quadrillion | billiard | Yes | SI |
| none | none | 0 | one | Yes | SI | |
| micro | µ | -6 | millionth | Yes | SI | |
| mega | M | 6 | million | Yes | SI | |
| centi | c | -2 | hundredth | Yes | SI | |
| hecto | h | 2 | hundred | Yes | SI | |
| nano | n | -9 | billionth | milliardth | Yes | SI |