Kilowatt-Hour to Gigajoule Converter
Convert Kilowatt-Hour (kWh) to Gigajoule (GJ) instantly. 1 kWh = 0.0036 GJ.
Energy Converter
27 units available
1 kWh = 0.0036 GJ
Formula:
GJ = kWh × 0.0036With your value: 1 kWh = 0.0036 GJ
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 Gigajoule conversions
Kilowatt-Hour to Gigajoule Conversion Table
| Kilowatt-Hour (kWh) | Gigajoule (GJ) |
|---|---|
| 0.5 | 0.0018 |
| 1 | 0.0036 |
| 2 | 0.0072 |
| 5 | 0.018 |
| 10 | 0.036 |
| 15 | 0.054 |
| 20 | 0.072 |
| 25 | 0.09 |
| 50 | 0.18 |
| 100 | 0.36 |
| 250 | 0.9 |
| 500 | 1.8 |
| 1000 | 3.6 |
Gigajoule to Kilowatt-Hour Conversion Table
| Gigajoule (GJ) | Kilowatt-Hour (kWh) |
|---|---|
| 0.5 | 138.888889 |
| 1 | 277.777778 |
| 2 | 555.555556 |
| 5 | 1,388.888889 |
| 10 | 2,777.777778 |
| 15 | 4,166.666667 |
| 20 | 5,555.555556 |
| 25 | 6,944.444444 |
| 50 | 13,888.888889 |
| 100 | 27,777.777778 |
| 250 | 69,444.444444 |
| 500 | 138,888.888889 |
| 1000 | 277,777.777778 |
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
Gigajoule (GJ)
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 Gigajoule
To convert from Kilowatt-Hour (kWh) to Gigajoule (GJ), multiply the value by 0.0036.
Formula: GJ = kWh × 0.0036
Reverse: kWh = GJ × 277.7777777778
Step-by-Step Example
- Start with your value in Kilowatt-Hour. For example: 5 kWh
- Multiply by the conversion factor: 5 x 0.0036
- The result is: 0.018 GJ
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 Gigajoule
The gigajoule (GJ) is a unit of energy and work. One gigajoule equals 1.000000 × 10^+9 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: energy calculations, engineering and science, education.
Frequently Asked Questions
How many Gigajoule are in 1 Kilowatt-Hour?
There are exactly 0.0036 Gigajoule in 1 Kilowatt-Hour. This means the conversion factor from Kilowatt-Hour to Gigajoule is 0.0036.
What is the formula to convert Kilowatt-Hour to Gigajoule?
The formula to convert Kilowatt-Hour to Gigajoule is: GJ = kWh × 0.0036. For example, to convert 10 Kilowatt-Hour to Gigajoule, you would multiply 10 by 0.0036.
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 Gigajoule?
The gigajoule (GJ) is a unit of energy and work. One gigajoule equals 1.000000 × 10^+9 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
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 Gigajoule converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kilowatt_hour-to-gigajoule