Kilowatt-hours to Joules Converter
Convert kilowatt-hours to joules. Free kWh to J energy converter for electricity and physics calculations.Updated 2026-03-15
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Formula: J = kWh × 3,600,000
Common Kilowatt-hours to Joules Conversions
| Kilowatt-hours (kWh) | Joules (J) |
|---|---|
| 0.001 kWh | 3600 J |
| 0.01 kWh | 36000 J |
| 0.1 kWh | 360000 J |
| 0.5 kWh | 1800000 J |
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 20 kWh | 72000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
| 500 kWh | 1800000000 J |
| 1000 kWh | 3600000000 J |
How to Convert Kilowatt-hours to Joules
To convert kilowatt-hours to joules, use the formula: J = kWh × 3,600,000
For example, to convert 0.5 kWh to J: 0.5 kWh = 1800000 J
💡 This calculator does the conversion instantly as you type. All calculations happen locally in your browser — no data is sent anywhere.
Frequently Asked Questions
How many joules in a kilowatt-hour?
1 kWh = 3,600,000 joules (3.6 megajoules).
What can 1 kWh power?
1 kWh can run a 100W light bulb for 10 hours, or charge a smartphone about 80 times.
Cite this tool:
"Kilowatt-hours to Joules Converter." ConvKit, conv-kit.com, https://conv-kit.com/tools/kwh-to-joules/. Accessed 2026-03-15.