Useful Conversion Factors and Units This section provides information on conversion factors and units often used when quantifying greenhouse gas emissions including:
Convert from: To: Multiply by: pound (lb) kilogram (kg) 0.454 ton (short ton) tonne 0.9072 foot (ft) metre (m) 0.3048 cubic foot (ft3 ) cubic metre (m 3 ) 0.02832 gallon (U.S. gal) litre (L) 3.7854 1 barrel litre (L) 119 1 barrel petroleum litre (L) 159 1 mile kilometer (km) 1.609 1 square mile square kilometer (km2 ) 2.590 1 acre square meter (m2 ) 4 047
Convert from: To: Multiply by: lb /1 000 gal kg /1 000 L 0.1198 lb /tonkg /tonne0.500 lb /million BTU skg /million BTU s0.454 lb /1 000 tonkg /1 000 tonnes0.500 lb /million ft3 kg /million m3 16.018
Convert from: To: Multiply by: million BTUs /hour kilowatt (kW) 293.1 million BTUs /hour horsepower (Hp) 393.0 million BTUs kilojoule (kJ) 1.055 millions million BTUs gigajoule (GJ) 1.055
BTU British Thermal Unit1 1 BTU MBTU thousand BTUs 1 x 103 BTUs MMBTU million BTUs 1 x 106 BTUs BBTU billion BTUs 1 x 109 BTUs TBTU trillion BTUs 1 x 1012 BTUs
1 A British thermal unit is the quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at or near 39.2 Fahrenheit. It is the customary U.S. energy unit.
Prefix/Symbol 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 -- 100 1 Deci (d) 10-1 .1 Centi (c) 10-2 .01 Milli (m) 10-3 .001 Micro (μ) 10-6 .000001 Nano (n) 10-9 .000000001 Pico (p) 10-12 .000000000001
Date Modified:
2010-03-09
