Energy converter
Type an amount of energy and choose the units. 1 kcal (a food Calorie) = 4.184 kJ, 1 kWh = 3.6 MJ and 1 BTU = 1055.06 J.
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- ๐ด Works offline
- โ Free, no sign-up, no watermark
How to use Energy Converter
- Type the amount of energy.
- Choose the unit you have and the unit you want.
- Read the answer and the formula.
- See the value in every unit in the table.
About Energy Converter
The calorie here is the thermochemical calorie, 4.184 J exactly; the kilocalorie is 1000 of them. Watt-hours measure energy as power ร time: running a 1000 W heater for an hour uses 1 kWh.
Is it private?
Yes. Energy Converter runs entirely in your web browser. What you type is never sent to Nolo or anyone else, and the page cannot send it anywhere: its security policy only allows it to talk to nolotools.com, which has no place to receive data. Nothing is stored either: close the page and it is gone. How Nolo works.
Questions and answers
How many kJ are in a kcal?
4.184 kJ. Food labels in many countries list both: 100 kcal = 418.4 kJ.
Is a food Calorie the same as a kilocalorie?
Yes. "Calorie" with a capital C on food labels means a kilocalorie, 1000 small calories.
How many joules are in a kWh?
3,600,000 J (1000 W ร 3600 s).
Which BTU does it use?
The International Table BTU, 1055.05585262 J, which is the one used for heating and air-conditioning ratings.
Is anything I type sent to a server?
No. The conversion runs in your browser with JavaScript and the page has no way to send your numbers anywhere. It also works offline once the page has loaded.