Multiples and Submultiples of SI Units Length Units Area Units Volume Units Mass Units Density Units Volumetric Liquid Flow Units Volumetric Gas Flow Units Mass Flow Units High Pressure Units Low Pressure Units Speed Units Torque Units Dynamic Viscosity Units Kinematic Viscosity Units Temperature Conversion Formulas
Table 1: Multiples and Submultiples of SI units Prefix Symbol Multiplying Factor 18 E 10 1 000 000 000 000 000 000 exa peta P 1015 1 000 000 000 000 000 12 tera T 10 1 000 000 000 000 giga G 109 1 000 000 000 6 M 10 1 000 000 mega kilo k 103 1 000 2 hecto* h 10 100 deca* da 10 10 -1 deci* d 10 0.1 centi 10-2 c 0.01 -3 milli 10 m 0.001 micro 10-6 u 0.000 001 -9 10 0.000 000 001 nano n pico 10-12 p 0.000 000 000 001 femto f 10-15 0.000 000 000 000 001 atto 10-18 a 0.000 000 000 000 000 001 * these prefixes are not normally used
Table 2: Length Units Millimeters Centimeters mm 1 10 1000 1000000 25.4 304.8 914.4 1609344
cm 0.1 1 100 100000 2.54 30.48 91.44 160934.4
Meters
Kilometers
Inches
Feet
Yards
Miles
m 0.001 0.01 1 1000 0.0254 0.3048 0.9144 1609.344
km 0.000001 0.00001 0.001 1 0.000025 0.000305 0.000914 1.609344
in 0.03937 0.393701 39.37008 39370.08 1 12 36 63360
ft 0.003281 0.032808 3.28084 3280.84 0.083333 1 3 5280