Convert Kilocalories to Kilowatt-hours
1 kilocalorie is 0.001162 kWh. One kilocalorie is exactly 0.00116222222222 kilowatt-hours.
One kilocalorie is 0.0011622222 kilowatt-hours. To convert kilocalories to kilowatt-hours, multiply by 0.0011622222; to go the other way, divide by 0.0011622222 or multiply by 860.42065. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A thousand small calories, and what a food label means by "Calories" with a capital C.
Factor checked against the defining standard · How we check
- Kilocalories × 0.0011622222
value * 0.001162222222220.001 kWh
1 kilocalorie in every energy unit
| Unit | Value | Exact factor |
|---|---|---|
| joules | 4,184 J | × 4,184 |
| kilojoules | 4.184 kJ | × 4.184 |
| calories | 1,000 cal | × 1,000 |
| kilocalories (as entered) | 1 kcal | — |
| watt-hours | 1.162222222 Wh | × 1.16222222222 |
| kilowatt-hours | 0.001162222222 kWh | × 0.00116222222222 |
| British thermal units | 3.965666831 BTU | × 3.96566683139 |
| foot-pounds | 3,085.960033 ft·lbf | × 3,085.96003258 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilocalories to kilowatt-hours?
- 1.Take the measurement in kilocalories.
- 2.Multiply by 0.0011622222 — that is how many kilowatt-hours fit in one kilocalorie.
- 3.To go back the other way, divide by 0.0011622222, or multiply by 860.42065.
Worked example: 25 kilocalories to kilowatt-hours
- Formula
- kcal × 0.0011622222 = kWh
- Arithmetic
- 25 × 0.0011622222 = 0.029056 kWh
- Answer
- 25 kcal = 0.029056 kWh
The factor is rounded for display; the figure above is computed from the full value.
Kilocalories to kilowatt-hours conversion table
| Kilocalories | Kilowatt-hours |
|---|---|
| 1 kcal | 0.001162 kWh |
| 2 kcal | 0.002324 kWh |
| 3 kcal | 0.003487 kWh |
| 4 kcal | 0.004649 kWh |
| 5 kcal | 0.005811 kWh |
| 6 kcal | 0.006973 kWh |
| 7 kcal | 0.008136 kWh |
| 8 kcal | 0.009298 kWh |
| 9 kcal | 0.01046 kWh |
| 10 kcal | 0.011622 kWh |
| 12 kcal | 0.013947 kWh |
| 15 kcal | 0.017433 kWh |
| 20 kcal | 0.023244 kWh |
| 25 kcal | 0.029056 kWh |
| 50 kcal | 0.058111 kWh |
| 100 kcal | 0.116222 kWh |
| 200 kcal | 0.232444 kWh |
| 300 kcal | 0.348667 kWh |
| 500 kcal | 0.581111 kWh |
| 1000 kcal | 1.162222 kWh |
| 2000 kcal | 2.324444 kWh |
| 5000 kcal | 5.811111 kWh |
| 10000 kcal | 11.622222 kWh |
What is a kilocalorie?
A thousand small calories, and what a food label means by "Calories" with a capital C. A 2,000 calorie diet is 2,000 kcal, or 8.4 megajoules.
What is a kilowatt-hour?
A thousand watt-hours, and the unit every electricity bill is added up in. Exactly 3.6 megajoules, and the reason a 100 W bulb left on for ten hours costs one unit.
How many kilowatt-hours are in a kilocalorie?
One kilocalorie is 0.0011622222 kilowatt-hours. Going the other way, one kilowatt-hour is 860.42065 kilocalories. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every energy unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Joules | J | the base unit |
| Kilojoules | kJ | 1000 joule |
| Calories | cal | 4.184 joule |
| Kilocalories | kcal | 4184 joule |
| Watt-hours | Wh | 3600 joule |
| Kilowatt-hours | kWh | 3600000 joule |
| British thermal units | BTU | 1055.0559 joule |
| Foot-pounds | ft·lbf | 1.3558179 joule |
Source: NIST Special Publication 811 — the thermochemical calorie is exactly 4.184 J
Questions people actually ask
- How many kilowatt-hours are in a kilocalorie?
- 0.0011622222. A thousand watt-hours, and the unit every electricity bill is added up in. Exactly 3.6 megajoules, and the reason a 100 W bulb left on for ten hours costs one unit.
- How do I convert kilowatt-hours back to kilocalories?
- Divide by 0.0011622222, or multiply by 860.42065 — they are the same operation.
Other energy conversions
Kilowatt-hours to kilocalories — the same conversion the other way.