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Calculators for Energy Used in the United States


Coal Conversion Calculator

Short Tons

Btu

Megajoules

Metric Tons

1 Short Ton = 19,988,000 Btu (based on U.S. consumption, 2008)

Electricity Conversion Calculator

KilowattHours

Btu

Megajoules

Million Calories

1 KilowattHour = 3,412 Btu

Natural Gas Conversion Calculator

Cubic Feet

Btu

Megajoules

Cubic Meters

1 Cubic Foot = 1,028 Btu (based on U.S. consumption, 2008);
1 therm = 100,000 Btu;
1 terajoule = 1,000,000 megajoules

Crude Oil Conversion Calculator

Barrels

Btu

Megajoules

Metric tons*

1 Barrel = 42 U.S. gallons = 5,800,000 Btu (based on U.S. production, 2008) *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 be different for different types of crude oil. Think of it like a glass of syrup weighing more than the same sized glass of soda.

Gasoline Conversion Calculator

Gallons

Btu

Megajoules

Metric Tons

1 Gallon = 124,000 Btu (rounded to nearest 1,000) (based on U.S. consumption, 2008)

Diesel & Heating Oil Conversion Calculator

Gallons

Btu

Megajoules

Metric Tons

1 Gallon = 139,000 Btu (rounded to nearest 1,000)

Scientific Notation Explained

Scientific notation is a short-hand way of writing a number that has a lot of digits. For example, the number 525,000,000 could be written as 5.25E+08. The "+08" tells you to move the decimal eight places to the right. A negative number after the "E" would tell you to move the decimal a certain number of places to the left. For instance, 5.25E-03 is the same as 0.00525.

Common Energy Units:
Scientific Notation

British Thermal Unit (Btu)

1.0

Millions of Btu

1.0E+06 Btu

Therm

1.0E+05 Btu

Billions of Btu

1.0E+09 Btu

Quad

1.0E+15 Btu

   

Calorie

1.0 Calorie

Kilocalorie

1.0E+03 Calories

Thermie

1.0E+05 Calories

Teracalorie

1.0E+12 Calories

   

Megajoule

1.0E+06 Joule

Joule

1.0 Joule

Gigajoule

1.0E+09 Joules

Terajoule

1.0E+12 Joules

   

watthour

1.0

Kilowatthour (kWh)

1.0E+03 watthour

Megawatthour (MWh)

1.0E+06 watthour

Gigawatthour (GWh)

1.0E+09 watthour

Terawatthour (TWh)

1.0E+12 watthour