Kilowatt-Hour to Joule Converter
Convert Kilowatt-Hour (kWh) to Joule (J) instantly. 1 kWh = 3,600,000 J.
Energy Converter
27 units available
1 kWh = 3,600,000 J
Formula:
J = kWh × 3,600,000With your value: 1 kWh = 3,600,000 J
How big is that?
Everyday references on a logarithmic scale, all expressed in kilowatt-hour so you can sanity-check the result.
Other Kilowatt-Hour to Joule conversions
Kilowatt-Hour to Joule Conversion Table
| Kilowatt-Hour (kWh) | Joule (J) |
|---|---|
| 0.5 | 1,800,000 |
| 1 | 3,600,000 |
| 2 | 7,200,000 |
| 5 | 18,000,000 |
| 10 | 36,000,000 |
| 15 | 54,000,000 |
| 20 | 72,000,000 |
| 25 | 90,000,000 |
| 50 | 180,000,000 |
| 100 | 360,000,000 |
| 250 | 900,000,000 |
| 500 | 1,800,000,000 |
| 1000 | 3,600,000,000 |
Joule to Kilowatt-Hour Conversion Table
| Joule (J) | Kilowatt-Hour (kWh) |
|---|---|
| 0.5 | 1.388889e-7 |
| 1 | 2.777778e-7 |
| 2 | 5.555556e-7 |
| 5 | 1.388889e-6 |
| 10 | 2.777778e-6 |
| 15 | 4.166667e-6 |
| 20 | 5.555556e-6 |
| 25 | 6.944444e-6 |
| 50 | 1.388889e-5 |
| 100 | 2.777778e-5 |
| 250 | 6.944444e-5 |
| 500 | 0.000139 |
| 1000 | 0.000278 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Kilowatt-Hour (kWh)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Joule (J)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Kilowatt-Hour to Joule
To convert from Kilowatt-Hour (kWh) to Joule (J), multiply the value by 3,600,000.
Formula: J = kWh × 3,600,000
Reverse: kWh = J × 2.777778e-7
Step-by-Step Example
- Start with your value in Kilowatt-Hour. For example: 5 kWh
- Multiply by the conversion factor: 5 x 3,600,000
- The result is: 18,000,000 J
About Kilowatt-Hour
The kilowatt-hour is a unit of energy equal to 3.6 million joules, commonly used for electrical billing.
Common uses: electricity bills, energy consumption, appliances.
About Joule
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
Common uses: physics, electrical engineering, chemistry.
Frequently Asked Questions
How many Joule are in 1 Kilowatt-Hour?
There are exactly 3,600,000 Joule in 1 Kilowatt-Hour. This means the conversion factor from Kilowatt-Hour to Joule is 3,600,000.
What is the formula to convert Kilowatt-Hour to Joule?
The formula to convert Kilowatt-Hour to Joule is: J = kWh × 3,600,000. For example, to convert 10 Kilowatt-Hour to Joule, you would multiply 10 by 3,600,000.
What is a Kilowatt-Hour?
The kilowatt-hour is a unit of energy equal to 3.6 million joules, commonly used for electrical billing.
What is a Joule?
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
What are the common uses of Kilowatt-Hour?
The Kilowatt-Hour is commonly used in electricity bills, energy consumption, appliances.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). Kilowatt-Hour to Joule converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kilowatt_hour-to-joule