| Prefix | Base 10 | Decimal | Number name (short scale) | Adoption [nb 1] | |
|---|---|---|---|---|---|
| Name | Symbol | ||||
| quetta | Q | 1030 | 1000000000000000000000000000000 | nonillion | 2022[1] |
| ronna | R | 1027 | 1000000000000000000000000000 | octillion | |
| yotta | Y | 1024 | 1000000000000000000000000 | septillion | 1991 |
| zetta | Z | 1021 | 1000000000000000000000 | sextillion | |
| exa | E | 1018 | 1000000000000000000 | quintillion | 1975[2] |
| peta | P | 1015 | 1000000000000000 | quadrillion | |
| tera | T | 1012 | 1000000000000 | trillion | 1960 |
| giga | G | 109 | 1000000000 | billion | |
| mega | M | 106 | 1000000 | million | 1873 |
| kilo | k | 103 | 1000 | thousand | 1795 |
| hecto | h | 102 | 100 | hundred | |
| deca | da | 101 | 10 | ten | |
| — | — | 100 | 1 | — | |
| deci | d | 10−1 | 0.1 | tenth | 1795 |
| centi | c | 10−2 | 0.01 | hundredth | |
| milli | m | 10−3 | 0.001 | thousandth | |
| micro | μ | 10−6 | 0.000001 | millionth | 1873 |
| nano | n | 10−9 | 0.000000001 | billionth | 1960 |
| pico | p | 10−12 | 0.000000000001 | trillionth | |
| femto | f | 10−15 | 0.000000000000001 | | quadrillionth | 1964 |
| atto | a | 10−18 | 0.000000000000000001 | quintillionth | |
| zepto | z | 10−21 | 0.000000000000000000001 | sextillionth | 1991 |
| yocto | y | 10−24 | 0.000000000000000000000001 | septillionth | |
| ronto | r | 10−27 | 0.000000000000000000000000001 | octillionth | 2022[1] |
| quecto | q | 10−30 | 0.000000000000000000000000000001 | nonillionth | |
| |||||
- ^ a b "On the extension of the range of SI prefixes". 18 November 2022. Retrieved 5 February 2023.
- ^ "Metric (SI) Prefixes". NIST.