Energy Converter: kWh, Joules, Calories and BTU
Convert electricity units, food calories and heat energy between metric and imperial units.
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Kilocalorie (food Calorie) to Kilojoule
418.4kJ
100 kcal = 418.4 kJ
1 kcal = 4.184 kJ · 1 kJ = 0.2390057361 kcal
All units
| Unit | Value | Unit |
|---|---|---|
| Metric | ||
| 4,18,400 | J | |
| 418.4 | kJ | |
| 0.4184 | MJ | |
| 116.2222222 | Wh | |
| 0.1162222222 | kWh | |
| 1,00,000 | cal | |
| 100 | kcal | |
| SI | ||
| 2.611447397 × 10²⁴ | eV | |
| Other | ||
| 41,84,00,00,00,000 | erg | |
| Imperial | ||
| 396.5666831 | BTU | |
| 3,08,596.0033 | ft·lbf | |
1 unit on an Indian electricity bill = 1 kWh. Food 'Calories' on labels are kilocalories (kcal).
How to use
- Type the value in the From unit.
- Pick the unit to convert to (it starts on kilojoules). Search by name or symbol.
- Read the result, or tap any row in the full table to switch the target unit.
Good to know
1 kWh = 1,000 W for one hour = 3.6 MJ. The "unit" on an Indian electricity bill is 1 kWh: a 1,000 W heater running 1 hour uses 1 unit.
Food labels in India show energy in kcal (often written Calories) and sometimes kJ: 1 kcal = 4.184 kJ (thermochemical calorie). 100 kcal = 418.4 kJ.
1 BTU (International Table) = 1,055.06 J; AC cooling capacity is quoted in BTU per hour, which is power, not energy (see the power converter).
Questions
How many joules is 1 kWh?
3,600,000 J (3.6 MJ).
Is a food Calorie the same as a calorie?
No. A food Calorie is a kilocalorie (kcal) = 1,000 small calories = 4.184 kJ.
What is one unit of electricity?
1 kilowatt-hour (kWh).
How many kWh is 1,000 kcal?
1.162 kWh.
Is anything I type sent to a server?
No. The conversion runs on your device and nothing is stored.