SI Unit Prefixes
Prefix | Symbol | Factor | Decimal | ||
Yocto | Septillionth | y | 10-24 | 0.000000000000000000000001 | |
Zepto | Sextillionth | z | 10-21 | 0.000000000000000000001 | |
Atto | Quintillionth | a | 10-18 | 0.000000000000000001 | |
Femto | Quadrillionth | f | 10-15 | 0.000000000000001 | |
Pico | Trillionth | p | 10-12 | 0.000000000001 | |
Nano | Billionth | n | 10-9 | 0.000000001 | |
Micro | Millionth | µ | 10-6 | 0.000001 | |
Milli | Thousandth | m | 10-3 | 0.001 | |
Centi | Hundredth | c | 10-2 | 0.01 | |
Deci | Tenth | d | 10-1 | 0.1 | |
One | 100 | 1 | |||
Deca | Ten | da | 101 | 10 | |
Hecto | Hundred | h | 102 | 100 | |
Kilo | Thousand | k | 103 | 1000 | |
Mega | Million | M | 106 | 1000000 | |
Giga | Billion | G | 109 | 1000000000 | |
Tera | Trillion | T | 1012 | 1000000000000 | |
Peta | Quadrillion | P | 1015 | 1000000000000000 | |
Exa | Quintillion | E | 1018 | 1000000000000000000 | |
Zetta | Sextillion | Z | 1021 | 1000000000000000000000 | |
Yotta | Septillion | Y | 1024 | 1000000000000000000000000 |
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