Coal conversion calculator
short tons
Btu
19489000
1
megajoules metric tons
21279.424
0.9071847
1 short ton = 19,489,000 Btu (based on U.S. consumption, 2013)
Electricity conversion calculator
kilowatthours Btu
1
3412
megajoules million calories
3.6
0.85981
1 kilowatthour = 3,412 Btu (based on U.S. consumption, 2013)
Natural gas conversion calculator
cubic feet
1
Btu
1025
megajoules cubic meters
1.0846
0.028317
1 cubic foot = 1,025 Btu (based on U.S. consumption, 2013)
Crude oil conversion calculator
barrels
1
Btu
5800000
megajoules metric tons*
6119.32
0.13637
1 barrel = 42 U.S. gallons = 5,800,000 Btu (based on U.S. production, 2013)
*Note: This is the average number of metric tons per barrel of crude oil used in the United
States. The actual number of metric tons per barrel will vary be different for different types of
crude oil.
Gasoline conversion calculator
gallons
1
Btu
124262
megajoules metric tons
131.10327
0.002791
1 gallon = 124,262 Btu (based on U.S. consumption, 2013)
Diesel fuel & heating oil conversion calculator
gallons
1
Btu
138690
megajoules metric tons
146.33
0.003192
1 gallon = 139,690 Btu (based on U.S. consumption, 2013)
Measuring energy in food
Food calories are a measure of energy in food. One food calorie is equal to 1,000 calories, or 1
kilocalorie. For example, the energy in a 300 (food) calorie ice cream cone is about the same as
the amount of electricity required to light a 100-watt incandescent light bulb for 3½ hours.
Food energy calculator
food calories Btu
1200
4761.9828
megajoules kilowatthours
5.0244
1.3956
1 food calorie = 1,000 calories, or 1 kilocalorie, or 3.968 Btu