Home› Conversions› Energy› Kilocalories to Kilowatt-hours
Energy
Kilocalories to Kilowatt-hours
Convert kilocalories (kcal) to kilowatt-hours (kWh). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 kcal = 0.001162 kWh
Kilocalories to Kilowatt-hours Conversion Table
Common values, ready to copy:
| kilocalories | kilowatt-hours |
|---|---|
| 1 kcal | 0.001162 kWh |
| 2 kcal | 0.002324 kWh |
| 5 kcal | 0.005811 kWh |
| 10 kcal | 0.011622 kWh |
| 25 kcal | 0.029056 kWh |
| 50 kcal | 0.058111 kWh |
| 100 kcal | 0.116222 kWh |
| 1,000 kcal | 1.1622 kWh |
Formula
kilowatt-hours = kilocalories × 1.16222222e-3
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
About Kilocalories and Kilowatt-hours
Kilocalories (kcal): A thousand small calories, or about 4,184 J; this is what 'calories' means on US food labels. Common uses: Food energy labeling in the US (a 'Calorie' on a US food label is a kilocalorie), nutrition tracking, and exercise energy expenditure.
Kilowatt-hours (kWh): A thousand watt-hours, or 3.6 MJ; the standard utility billing unit for residential and commercial electricity. Common uses: Electricity bills, residential and EV battery capacity (a typical EV battery is 50-100 kWh), and home solar generation.
How the conversion works
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
The exact relationship is kilowatt-hours = kilocalories × 1.16222222e-3, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between kilocalories and kilowatt-hours comes up wherever energy measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.