kWh to Joules
Convert kilowatt-hours to joules. One kWh is exactly 3,600,000 J (3.6 MJ). Default input 1 kWh. Energy units only, not power.
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How to convert kWh to joules
- Enter the energy value. Default is 1 kWh.
- Keep From as Kilowatt-hours and To as Joules, or swap units.
- Read joules and the conversion table for other energy units.
- Power over time uses watts to joules. Nothing is uploaded.
Kilowatt-hour
Energy unit conversion
| kWh | 3.6×10⁶ joules exactly |
|---|---|
| Joule | SI energy unit |
| Bill unit | Utilities invoice kWh, physics uses J |
| Default | 1 kWh → 3,600,000 J |
| Not power | kW is power; kWh is energy |
| Hub | More units on the energy converter hub |
Exact factor
1 kWh = 3,600,000 J because 1 kW × 3600 s = 3600 kJ. The engine uses the stored factor table shared with the energy hub.
Reading utility bills
Multiply billed kWh by 3.6×10⁶ to compare with physics homework in joules.
Joules to kWh
Joules to kWh divides by 3.6×10⁶.
Power vs energy
Watts to joules integrates power over time when you start from watts.
Limits
Unit conversion only.
The formula runs in this tab. CZNull does not receive the numbers.
How many joules in 1 kWh?
3,600,000 J exactly in the SI definition used here.
Is kWh a power unit?
No. kWh is energy. kW alone is power.
Can I convert to calories?
Yes. Pick calories in the To list on this form or use the energy hub.
Why default value 1?
One kWh is the common bill increment to show the 3.6 MJ factor clearly.
Does this include line losses?
No. It converts numbers you type, not meter diagnostics.