Metric System Conversions

Multiple Standard Form Unit Prefix Symbol
1018 exa E
1015 peta
1012 tera
109 giga
106 1,000,000 (one million) mega
103 kilo
102 hecto
101 deka
100 -
10-1 deci
10-2 centi
10-3 milli
10-6 micro
10-9 nano
10-12 pico
10-15 femto
10-18 atto
The 2.54-centimeter worm! Image credit to Keith Edkins of Wikimedia Commons.