Multiple | Number | Prefix | Symbol |
---|---|---|---|

10^{24} |
1000000000000000000000000 | Yotta | Y |

10^{21} |
1000000000000000000000 | Zetta | Z |

10^{18} |
1000000000000000000 | Exa | E |

10^{15} |
1000000000000000 | peta | P |

10^{12} |
1000000000000 | tera | T |

10^{9} |
1000000000 | giga | G |

10^{6} |
1000000 | mega | M |

10^{3} |
1000 | kilo | k |

10^{2} |
100 | hecto | h |

10^{1} |
10 | deca | da |

10^{-1} |
0.1 | deci | d |

10^{-2} |
0.01 | centi | c |

10^{-3} |
0.001 | milli | m |

10^{-6} |
0.000001 | micro | µ |

10^{-9} |
0.000000001 | nano | n |

10^{-12} |
0.000000000001 | pico | p |

10^{-15} |
0.000000000000001 | femto | f |

10^{-18} |
0.000000000000000001 | atto | a |

10^{-21} |
0.000000000000000000001 | zepto | z |

10^{-24} |
0.000000000000000000000001 | yokto | y |

**International System of Units [SI], prefixes**

SI prefixes strictly represent powers of 10, they should not be used to represent powers of 2.

Thus, one kilobit, or 1 kbit, is 1000 bit and not 2^{10} bit = 1024 bit.

Scientific notation only uses 10^{3}, 10^{6}, 10^{9} and so on.

**Engineering Symbols**

**alpha: a**, use FONT FACE = "SYMBOL" a

**beta: b**, use FONT FACE = "SYMBOL" b

**epsilon: e**, use FONT FACE = "SYMBOL" e

**phi: f**, use FONT FACE = "SYMBOL" f

**pi: p**, use FONT FACE = "SYMBOL" p

**Omega: W**, use FONT FACE = "SYMBOL" W

Related page HTML escape codes

**Note:** The Font symbol used above may not work in all browsers

Engineering prefixes are in multiplies of three. 10^{1},
10^{3}, 10^{6} and so on [Engineering Notation].

I use the html sup command to make the exponent, encased in the less than and greater than signs.

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