Calorie to Kilowatt Hour Converter
Energy · unit-converter
Convert Calorie to Kilowatt Hour with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Calorie (cal)
To: Kilowatt Hour (kwh)
About Calorie
The small calorie (cal) is 4.184 J in this converter (thermochemical). Do not confuse with the dietary kilocalorie (kcal).
About Kilowatt Hour
One kilowatt-hour is the energy from 1 kW of power for one hour: 1 kWh = 3,600,000 J. Utility bills and battery specs often use kWh.
How to convert calories to kilowatt hours
1 calorie is equal to 0.00000116222222 kilowatt hour when both are expressed in joule-equivalents:
1 cal = (4.184 J ÷ 3,600,000 J) kwh = 0.00000116222222 kwh
Each calorie is defined as 4.184 J and each kilowatt hour as 3,600,000 J in this tool, so one cal equals 4.184 ÷ 3,600,000 kwh = 0.00000116222222 kwh.
Let d(cal) be the numeric amount in Calorie (cal), and d(kwh) the amount in Kilowatt Hour (kwh). Then:
d(kwh) = d(cal) × (4.184 / 3,600,000)
Equivalently, divide by how many cal fit into one kwh (joules per kwh divided by joules per cal):
d(kwh) = d(cal) ÷ 860420.65009560226463
Or: kilowatt hour = calorie ÷ 860420.65009560226463
Examples
Example #1: Convert 1 cal to kilowatt hour
1 cal = 1 cal × (4.184/3,600,000) kwh = 0.0000011622 kwh
1 cal = 1 cal ÷ 860420.65009560226463 = 0.0000011622 kwh
Example #2: Convert 10 cal to kilowatt hour
10 cal = 10 cal × (4.184/3,600,000) kwh = 0.0000116222 kwh
10 cal = 10 cal ÷ 860420.65009560226463 = 0.0000116222 kwh
Summary
To convert Calorie to Kilowatt Hour, multiply the value in cal by the ratio of joules per cal divided by joules per kwh. Equivalently: value_kwh = value_cal × (4.184 / 3600000). Numerically, 1 cal equals 0.0000011622222222222223 kwh.
Relationship context
You are converting between food / nutrition energy (calories) (Calories) and electrical energy (watt-hours) (Kilowatt Hours). All values are mapped through joules first. The numeric factor is 1.162222e-6.
Conversion tables
| Calorie (cal) | Kilowatt Hour (kwh) |
|---|---|
| 0.1 | 0.0000001162 |
| 1 | 0.0000011622 |
| 2 | 0.0000023244 |
| 3 | 0.0000034867 |
| 4 | 0.0000046489 |
| 5 | 0.0000058111 |
| 6 | 0.0000069733 |
| 7 | 0.0000081356 |
| 8 | 0.0000092978 |
| 9 | 0.00001046 |
| Calorie (cal) | Kilowatt Hour (kwh) |
|---|---|
| 10 | 0.0000116222 |
| 20 | 0.0000232444 |
| 30 | 0.0000348667 |
| 40 | 0.0000464889 |
| 50 | 0.0000581111 |
| 60 | 0.0000697333 |
| 70 | 0.0000813556 |
| 80 | 0.0000929778 |
| 90 | 0.0001046 |
| 100 | 0.0001162222 |