UnitConJoules to Kilowatt-Hours Converter
Convert joules to kilowatt-hours when interpreting scientific energy data in electrical billing terms, comparing battery specifications, or converting physics problem outputs to practical energy units.
Formula
Divide joules by 3,600,000 to get kilowatt-hours. To reverse, multiply kilowatt-hours by 3,600,000 to get joules.
Quick reference
| Joule (J) | Kilowatt-hour (kWh) |
|---|---|
| 3600 | 0.001 |
| 36000 | 0.01 |
| 360000 | 0.1 |
| 1000000 | 0.2777778 |
| 3600000 | 1 |
| 10000000 | 2.777778 |
| 36000000 | 10 |
| 100000000 | 27.77778 |
| 360000000 | 100 |
| 3600000000 | 1,000 |
About these units
Joule
The joule is the SI coherent unit of energy, defined from base units. It is used across thermodynamics, mechanics, electricity, and chemistry as the universal energy measure.
Kilowatt-hour
The kilowatt-hour is the practical unit for electrical energy, used on electricity meters and bills worldwide. Its large scale (3.6 MJ) makes it convenient for describing household and industrial energy consumption.
Frequently asked questions
1,000,000 ÷ 3,600,000 ≈ 0.278 kWh.
3,600,000 ÷ 3,600,000 = 1 kWh exactly.
A 2 kW heater running for 1 hour uses 2 kWh = 7,200,000 J.