Toolstia / energy converter
Energy converter
Convert energy between joules, kilojoules, calories, kilocalories (food Calories), kilowatt-hours, BTU and more. Handy for food energy, electricity bills and heating.
1 Kilowatt-hour (kWh) = 3.6 Megajoule (MJ)
| Unit | 1 Kilowatt-hour (kWh) equals |
|---|---|
| Joule (J) | 3,600,000 |
| Kilojoule (kJ) | 3,600 |
| Megajoule (MJ) | 3.6 |
| Calorie (cal) | 860,420.650096 |
| Kilocalorie (kcal / food Calorie) | 860.420650096 |
| Watt-hour (Wh) | 1,000 |
| Kilowatt-hour (kWh) | 1 |
| British thermal unit (BTU) | 3,412.14163313 |
| Therm (US) | 0.0341214163313 |
| Foot-pound force (ft·lbf) | 2,655,223.7374 |
| Electronvolt (eV) | 2.24694327e+25 |
How it works
- Type the value.
- Choose the unit you are converting from and the unit you want.
- Read the result, and scan the table for every other unit at once.
Food energy
The Calorie on a food label is a kilocalorie: 1 kcal = 4.184 kJ = 4,184 J.
Electricity
One kilowatt-hour is 3.6 megajoules, about 3,412 BTU. It is the unit on most electricity bills.
Heating
Gas is often billed in therms (100,000 BTU) or megajoules, so this converter helps compare fuels.
Other units
Foot-pounds are used in torque and mechanics. Electronvolts are used in physics and are tiny: 1 eV is about 1.6e-19 J.
Questions
How many kJ in a kcal?
4.184.
How many joules in a kWh?
3,600,000.
Is anything uploaded?
No. The conversion happens in your browser and nothing is sent anywhere.