About the Energy Converter
Use this energy converter to switch between joules, kilojoules, megajoules, watt-hours, kilowatt-hours, thermal calories, food calories, BTUs, therms, electronvolts, foot-pounds, ergs, horsepower-hours, and tons of TNT.
How to Use It
Enter an energy value, choose the starting unit, then choose the target unit. The converted value updates automatically, and the swap button reverses the selected units.
Thermal vs Food Calories
A thermal calorie is about 4.184 joules. A food calorie is a kilocalorie, equal to 1,000 thermal calories, so the two must be converted separately.