Joules to Kilowatt-hours Converter
Convert joules (J) to kilowatt-hours (kWh) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Kilowatt-hours
- 2.777778e-7 kWh
How to use the joules to kilowatt-hours converter
- Enter the joules (J).
- The results update as you type, or press Calculate.
- Read the kilowatt-hours first, then the supporting figures below it.
Formula
Kilowatt-hours = joules × 2.777778e-07
Worked example
For example, with these inputs:
- Joules (J): 1
the calculator returns:
- Kilowatt-hours: 2.777778e-7 kWh
Joules to Kilowatt-hours table
| Joules | Kilowatt-hours |
|---|---|
| 1 J | 2.777778e-7 kWh |
| 2 J | 5.555556e-7 kWh |
| 5 J | 1.388889e-6 kWh |
| 10 J | 2.777778e-6 kWh |
| 20 J | 5.555556e-6 kWh |
| 25 J | 6.944444e-6 kWh |
| 50 J | 1.388889e-5 kWh |
| 100 J | 2.777778e-5 kWh |
| 250 J | 6.944444e-5 kWh |
| 500 J | 0.000139 kWh |
| 1,000 J | 0.000278 kWh |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Frequently asked questions
How many kilowatt-hours are in one joule?
1 J = 2.777778e-7 kWh.
How do I convert J to kWh?
Kilowatt-hours = joules × 2.777778e-07.