# Metric System Prefixes Chart

To understand the metric system, the prefixes chart comes in handy. The metric system prefixes are also known as metric prefixes or SI prefixes. Scroll down this article to gain more information about this subject.

Bhakti Satalkar

Metric System Chart

Conversions involved in this system consist of three basic units: meter, gram, and liter. The unit of measurement used for weight is gram. Meter is the unit used for measuring length, while the unit for liquid measurement is liter. To these basic units, different prefixes are affixed, which ensure that no conversion from one unit to another has to be undertaken. The standard set of prefixes are in powers of ten. Using the positive as well as negative powers of ten, the larger and smaller units are derived from the basic ones.

- Milli-
- Centi-
- Deci-
- Meter/Gram/Liter
- Deca-
- Hecto-
- Kilo-

Metric System Prefixes Chart

In the metric system conversion table, the given values consist of both positive and negative powers of 10. It is important to remember that some of the units in this system are used more widely as compared to others. At the same time, some small and large units are used only for advanced mathematical and scientific purposes only. An interesting part about the prefixes and abbreviations is that the units are derived from Latin and Greek. The positive powers are derived from Greek, while the negative powers are derived from Latin. The only exception is 'micro', which is a Greek word. It was only after the introduction of the metric system, the Greek 'greater than one' and Latin 'less than one' conversions went out of circulation.

Symbol |
Prefix |
10^{n} |
Multiplication Factor |
In Words |

Y | yotta | 10^{24} |
1,000,000,000,000,000,000,000,000 | septillion |

Z | zetta | 10^{21} |
1,000,000,000,000,000,000,000 | sextillion |

E | exa | 10^{18} |
1,000,000,000,000,000,000 | quintillion |

P | peta | 10^{15} |
1,000,000,000,000,000 | quadrillion |

T | tera | 10^{12} |
1,000,000,000,000 | trillion |

G | giga | 10^{9} |
1,000,000,000 | billion |

M | mega | 10^{6} |
1,000,000 | million |

k | kilo | 10^{3} |
1,000 | thousand |

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

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

10^{0} |
1 | one | ||

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

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

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

ยต | micro | 10^{-6} |
0.000,001 | millionth |

n | nano | 10^{-9} |
0.000,000,001 | billionth |

p | pico | 10^{-12} |
0.000,000,000,001 | trillionth |

f | femto | 10^{-15} |
0.000,000,000,000,001 | quadrillionth |

a | atto | 10^{-18} |
0.000,000,000,000,000,001 | quintillionth |

z | zepto | 10^{-21} |
0.000,000,000,000,000,000,001 | sextillionth |

y | yocto | 10^{-24} |
0.000,000,000,000,000,000,000,001 | septillionth |