⚡ Energy
joules to kWh Converter
Convert joules to kWh instantly with a reference conversion table.
Quick answer: To convert joules to kWh, multiply by 2.77778e-07. For example, 1 joules = 2.77778e-07 kWh. Use the calculator below for any value.
joules to kWh
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Common conversions
| joules | kWh |
|---|
Formula:
How to convert joules to kWh
1
Enter your value
Type the number of joules you want to convert into the left box. The result in kwh appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — kWh to joules. Your current value carries across so you don't have to re-enter anything.
3
About joules and kWh
joules and kWh are common energy measurements.
📊 Common conversions at a glance
| joules | kWh |
|---|---|
| 1000 | 0.0002778 |
| 10000 | 0.002778 |
| 100000 | 0.02778 |
| 1000000 | 0.2778 |
| 3600000 | 1 |
| 10000000 | 2.778 |
Reviewed for 2026. joules ↔ kWh conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.
Frequently asked questions
How do I convert joules to kWh?
To convert joules to kWh, multiply by 2.77778e-07. Or use the calculator above for instant results.
How many kWh are in 1 joules?
1 joules equals 2.77778e-07 kWh.
Is the joules to kWh converter free?
Yes, the joules to kWh converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.