Kilowatt-hour to Joule
Instantly convert Kilowatt-hour (kWh) to Joule (J). Free online converter with accurate results.
kWh
Joule (J)
J
J = kWh × 3.60000e+6
Quick Reference: Kilowatt-hour to Joule
| kWh | J |
|---|---|
| 0.1 | 360,000 |
| 0.5 | 1,800,000 |
| 1 | 3,600,000 |
| 2 | 7,200,000 |
| 5 | 18,000,000 |
| 10 | 36,000,000 |
How to Convert Kilowatt-hour to Joule
Formula:
J = kWh × 3.60000e+6
Example:
1 kWh = 3,600,000 J
- Enter the value in Kilowatt-hour you want to convert
- The result is calculated automatically
- Copy your result in Joule or continue converting
About Kilowatt-hour and Joule
Kilowatt-hours (kWh) measure electrical energy consumption, while joules are the SI unit for energy. One kWh equals exactly 3,600,000 joules (3.6 megajoules).
Common Uses for This Conversion
Understanding electricity bills, calculating energy costs, comparing appliance efficiency, and industrial energy planning.
💡Did You Know?
One kWh can power a 100-watt light bulb for 10 hours, run a laptop for about 8 hours, or heat water for roughly 3 cups of coffee. The average US home uses about 30 kWh per day.
Frequently Asked Questions
1 kilowatt-hour (kWh) = exactly 3,600,000 joules (3.6 MJ). Formula: 1 kWh = 1,000 W × 3,600 s = 3,600,000 J. One kWh is the energy used by a 1,000-watt appliance running for exactly one hour. The average US household uses about 30 kWh per day.
1 kWh = exactly 3,600 kJ. Kilojoules are used in scientific contexts and on European nutrition labels — EU food packaging shows both kcal and kJ. A typical 2,000 kcal daily diet equals about 8,368 kJ, approximately 2.32 kWh of food energy.
5 kWh = 18,000,000 joules (18 MJ). This is roughly the energy stored in a plug-in hybrid car battery (enough for about 25–30 km of electric-only range). It is also about what a typical laptop charger consumes running continuously for 100 hours.
1 kWh = exactly 3.6 MJ. Megajoules are used in engineering, thermodynamics, and industrial energy measurement. In Australia, residential natural gas is billed in MJ; appliances and hot water systems are rated in MJ/h. To convert any kWh value to MJ, multiply by 3.6.
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