SI Measurements:

Metric Prefixes

 Prefix Symbol Factor of Base Unit giga- G 1 000 000 000 mega- M 1 000 000 kilo- k 1 000 hecto- h 100 deka- da 10 deci- d 0.1 centi- c 0.01 milli- m 0.001 micro- m 0.000 001 nano- n 0.000 000 001 pico- p 0.000 000 000 001

Nice visual display of Powers of Ten (a view from outer space to the inside of an atom) viewed by powers of 10!

Mass

1 kilogram (kg)      =      SI base unit of mass

1 gram (g)              =        0.001 kg

1 milligram (mg)    =        0.000 001 kg

1 microgram (mg)  =       0.000 000 001 kg

Length

1 kilometer  (km)      =      1 000 m

1 meter (m)              =        SI base unit of mass

1 centimeter (cm)    =        0.01 m

1 millimeter (mm)    =        0.001 m

1 microgram (mm)  =       0.000 001 m

1 nanometer (nm)    =    0.000 000 001 m

1 picometer (pm)    =    0.000 000 000 001 m

Area

1 square kilometer (km2)    =        100 hectacres (ha)

1 hectacre (ha)                     =        10 000 square meters (m2)

1 square meter (m2)            =        10 000 square centimeters (cm2)

1 square centimeter (cm2)    =        100 square millimeters (mm2)

Volume

1 liter (L)            =    common unit for liquid volume (not SI)

1 cubic meter (m3)    =    1000 L    =    1 kiloliter (kL)

1 milliliter (mL)            =    0.001 L        =        1 cubic centimeter (cm3  or  cc)