Calculators for Energy Used in the United States
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: |
|
|---|---|
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 |
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 |



