Energy Conversions


Conversion factors for
energy
We show only ones for converting
TO  SI units (joules)
Strictly speaking, there are conversion factors only between defined energy quantities, such as a conversion between calories and joules.  However, there are various proxies that are used as if they were units of energy, most notably the barrel of oil, the gallon of gasoline, and the ton of TNT.  The common ones are given here.

 
multiply number of 
by  to get joules
calories
4.186
kilocalories
4186
BTU
1054
kilowatt-hours (kWh)
horsepower-hours
therms
watt-seconds
1.00
gallons of gasoline
barrels of oil
cords of white oak
cubic feet of natural gas
(6/17/00)
tons of TNT
energy stored in D-cell battery
4000
energy stored in new, 
fully charged car battery
Quads

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