Kilowatt-hours to Joules
Convert kilowatt-hours to joules instantly, with a reference table.
Kilowatt-hours to Joules at a glance
Kilowatt-hours to Joules is a free online converter you can use right now to convert kilowatt-hours to joules instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Kilowatt-hours to Joules conversion table
| Kilowatt-hours (kWh) | Joules (J) |
|---|---|
| 1 kWh | 3,600,000 J |
| 2 kWh | 7,200,000 J |
| 3 kWh | 10,800,000 J |
| 5 kWh | 18,000,000 J |
| 10 kWh | 36,000,000 J |
| 25 kWh | 90,000,000 J |
| 50 kWh | 180,000,000 J |
| 100 kWh | 360,000,000 J |
| 500 kWh | 1,800,000,000 J |
| 1000 kWh | 3,600,000,000 J |
About Kilowatt-hours to Joules
Convert kilowatt-hours to joules instantly, with a reference table of common values. The factor is exact: 1 kWh = 3600000 J.
A conversion from the billing unit of electricity to the SI unit of energy, needed whenever consumption data enters a physics or engineering calculation.
The kilowatt-hour is the energy used by a one-kilowatt appliance running for one hour โ a unit of energy built from a unit of power multiplied by time. It is the billing unit for electricity worldwide and the unit used to state electric vehicle battery capacity. One kWh is 3.6 million joules, and runs a typical fridge for about a day.
Worked through with real numbers: 1 kWh is 3600000 J, 100 kWh is 360000000 J, 2000 kWh is 7200000000 J.
As for the other side of the conversion: lifting an apple one metre takes about one joule.
Energy conversions run into the calorie problem: the calorie on a food label is really a kilocalorie, a thousand times the calorie used in chemistry. Mixing the two produces errors of a factor of a thousand.
How to use Kilowatt-hours to Joules
- Enter the number of kilowatt-hours you want to convert.
- The equivalent in joules appears instantly โ there is no button to press.
- Check the reference table for common Kilowatt-hours to Joules values.
Frequently asked questions
How do I convert kilowatt-hours to joules?
Multiply your kilowatt-hours figure by 3600000 to get joules โ or type a value above and read the answer straight off.
How many joules are in one kilowatt-hour?
1 kWh = 3600000 J.
When would I need to convert kilowatt-hours to joules?
A conversion from the billing unit of electricity to the SI unit of energy, needed whenever consumption data enters a physics or engineering calculation.
What is a kilowatt-hour, exactly?
The kilowatt-hour is the energy used by a one-kilowatt appliance running for one hour โ a unit of energy built from a unit of power multiplied by time. One kWh is 3.6 million joules, and runs a typical fridge for about a day.
Where is the joule actually used?
It is the standard energy unit throughout physics and engineering, and underlies the watt, which is one joule per second. Lifting an apple one metre takes about one joule.
Is there anything tricky about energy conversions?
Energy conversions run into the calorie problem: the calorie on a food label is really a kilocalorie, a thousand times the calorie used in chemistry. Mixing the two produces errors of a factor of a thousand.
Is this converter accurate?
Yes. It uses the exact standard factor of 1 kWh = 3600000 J, and the conversion runs in your browser so nothing is uploaded.