Metric prefixes
These are the commonly used SI metric multiplier prefixes…
Quetto | q | 1.E-30 |
Ronno | r | 1.E-27 |
Yotto | y | 1.E-24 |
Zepto | z | 1.E-21 |
Atto | a | 1.E-18 |
Femto | f | 1.E-15 |
Pico | p | 1.E-12 |
Nano | n | 1.E-09 |
Micro | µ | 1.E-06 |
Milli | m | 1.E-03 |
Centi | c | 1.E-02 |
Deci | d | 1.E-01 |
0 | ||
Deca | da | 1.E+01 |
Hecto | h | 1.E+02 |
Kilo | k | 1.E+03 |
Myria | (rare) | 1.E+04 |
Mega | M | 1.E+06 |
Giga | G | 1.E+09 |
Tera | T | 1.E+12 |
Peta | P | 1.E+15 |
Exa | E | 1.E+18 |
Zetta | Z | 1.E+21 |
Yotta | Y | 1.E+24 |
Ronna | R | 1.E+27 |
Quetta | Q | 1.E+30 |
- Updated 2022-11-29 to take into account the new metric prefixes agreed at General Conference on Weights and Measures (CGPM) 2022. More info.