International System of Units (SI)—Standard prefixes
Prefix Symbol Multiplication factor
Tera T 1012 = 1,000,000,000,000
Giga G 109 = 1,000,000,000
Mega M 106 = 1,000,000
Kilo k 103 = 1,000
Hecto h 102 = 100
Deca da 101 = 10
Deci d 10-1 = 0.1
Centi c 10-2 = 0.01
Milli m 10-3 = 0.001
Micro μ 10-6 = 0.000001
Nano n 10-9 = 0.000000001
Pico p 10-12 = 0.000000000001

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