1 calorie equals 1.1622 × 10^−6 kilowatt-hours. To convert calories to kilowatt-hours, multiply the calorie value by 1.1622 × 10^−6. For quick reference: 1 cal = 1.1622 × 10^−6 kWh, 5 cal = 5.8111 × 10^−6 kWh, 10 cal = 1.1622 × 10^−5 kWh, 100 cal = 0.000116222 kWh.
FormulaKilowatt-hours = Calories × 1.1622 × 10^−6
Quick
How to convert calories to kilowatt-hours
1
Take your value
Start with your value in calories.
2
Multiply by 1.1622 × 10^−6
Multiply the calorie value by 1.1622 × 10^−6. This is the exact conversion factor from calories to kilowatt-hours.
3
Read the result
The product is your value in kilowatt-hours. For example, 5 cal × 1.1622 × 10^−6 = 5.8111 × 10^−6 kWh.
Conversion formula
The exact factor from calories to kilowatt-hours is 1.1622 × 10^−6.
Kilowatt-hours = Calories × 1.1622 × 10^−6
Calories to Kilowatt-hours conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
Conversion table from calories to kilowatt-hours
Calories (cal)
Kilowatt-hours (kWh)
0.001 cal
1.1622 × 10^−9 kWh
0.01 cal
1.1622 × 10^−8 kWh
0.1 cal
1.1622 × 10^−7 kWh
0.5 cal
5.8111 × 10^−7 kWh
1 cal
1.1622 × 10^−6 kWh
1.5 cal
1.7433 × 10^−6 kWh
2 cal
2.3244 × 10^−6 kWh
5 cal
5.8111 × 10^−6 kWh
10 cal
1.1622 × 10^−5 kWh
20 cal
2.3244 × 10^−5 kWh
50 cal
5.8111 × 10^−5 kWh
100 cal
0.00011622 kWh
200 cal
0.00023244 kWh
250 cal
0.00029056 kWh
500 cal
0.00058111 kWh
1000 cal
0.0011622 kWh
2000 cal
0.0023244 kWh
2500 cal
0.0029056 kWh
3600 cal
0.004184 kWh
5000 cal
0.0058111 kWh
7500 cal
0.0087167 kWh
10000 cal
0.011622 kWh
25000 cal
0.029056 kWh
50000 cal
0.058111 kWh
100000 cal
0.11622 kWh
250000 cal
0.29056 kWh
500000 cal
0.58111 kWh
1000000 cal
1.1622 kWh
2000000 cal
2.3244 kWh
3600000 cal
4.184 kWh
5000000 cal
5.8111 kWh
10000000 cal
11.622 kWh
25000000 cal
29.056 kWh
50000000 cal
58.111 kWh
100000000 cal
116.22 kWh
250000000 cal
290.56 kWh
500000000 cal
581.11 kWh
1000000000 cal
1162.2 kWh
2000000000 cal
2324.4 kWh
5000000000 cal
5811.1 kWh
10000000000 cal
11622 kWh
20000000000 cal
23244 kWh
50000000000 cal
58111 kWh
100000000000 cal
116222 kWh
1000000000000 cal
1162222 kWh
10000000000000 cal
11622222 kWh
100000000000000 cal
116222222 kWh
1000000000000000 cal
1162222222 kWh
10000000000000000 cal
11622222222 kWh
100000000000000000 cal
116222222222 kWh
Real-world reference
Burning a single dietary calorie of fat releases about 4.184 kJ of heat. A wooden match releases roughly 1,000 small calories.
Frequently asked questions
How many kilowatt-hours are in 1 calorie?
1 calorie equals 1.1622 × 10^−6 kilowatt-hours.
How do I convert calories to kilowatt-hours?
Multiply the calorie value by 1.1622 × 10^−6. So x cal × 1.1622 × 10^−6 = the equivalent in kWh.
What is 5 calories in kilowatt-hours?
5 calories equals 5.8111 × 10^−6 kilowatt-hours.
What is 10 calories in kilowatt-hours?
10 calories equals 1.1622 × 10^−5 kilowatt-hours.
What is 100 calories in kilowatt-hours?
100 calories equals 0.000116222 kilowatt-hours.
How do I convert back from kilowatt-hours to calories?
Multiply the kilowatt-hour value by 860421. For example, 1 kWh = 860421 cal.
Is the calorie bigger than the kilowatt-hour?
No. 1 calorie is smaller than 1 kilowatt-hour. It takes 860421 calories to equal 1 kilowatt-hour.
Are these conversion factors exact?
Yes. The factor of 1.1622 × 10^−6 is derived directly from the SI definitions of calorie and kilowatt-hour.
About the calorie and the kilowatt-hour
The calorie
Convertitive uses the thermochemical (small) calorie, defined as exactly 4.184 joules — the energy needed to raise 1 g of water by 1 °C. Do not confuse it with the large calorie (kcal) used on US nutrition labels, which is 1,000 of these small calories.
The kilowatt-hour
The kilowatt-hour (kWh) equals exactly 3,600,000 joules — the unit on every household electricity bill. One kWh runs a 1,000 W appliance for one hour.