# Prefixes and Magnitudes

To make sense of the vast range over which physical quantities are measured, prefixes are used as a short-cut to writting the magnitude using scientific notation

Prefix | Magnitude |
---|---|

atto a | 10^{-18} |

femto f | 10^{-15} |

pico p | 10^{-12} |

nano n | 10^{-9} |

micro μ | 10^{-6} |

mili m | 10^{-3} |

Kilo k | 10^{3} |

Mega M | 10^{6} |

Giga G | 10^{9} |

Tera T | 10^{12} |

Peta P | 10^{15} |

Exa E | 10^{18} |

Other prefixes which are commonly used but are not strictly part of the SI system.

Prefix | Magnitude |
---|---|

centi c | 10^{-2} |

deci d | 10^{-1} |

Deca Da | 10^{1} |

Hecto h | 10^{2} |