Gigajoules to Kilowatt-hours
Type a value in Gigajoules and get the result in Kilowatt-hours, calculated exactly.
100 Gigajoules ≈ 27,777.77778 Kilowatt-hours
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
kWh = GJ ÷ 0.0036
To convert Gigajoules to Kilowatt-hours, divide the value by 0.0036.
Worked examples
- 1 GJ ÷ 0.0036 ≈ 277.7777778 kWh
- 100 GJ ÷ 0.0036 ≈ 27,777.77778 kWh
- 50 GJ ÷ 0.0036 ≈ 13,888.88889 kWh
This factor is exact by definition.
Conversion table
| Gigajoules (GJ) | Kilowatt-hours (kWh) |
|---|---|
| 1 | ≈ 277.7778 |
| 2 | ≈ 555.5556 |
| 3 | ≈ 833.3333 |
| 4 | ≈ 1,111.111 |
| 5 | ≈ 1,388.889 |
| 6 | ≈ 1,666.667 |
| 7 | ≈ 1,944.444 |
| 8 | ≈ 2,222.222 |
| 9 | 2,500 |
| 10 | ≈ 2,777.778 |
| 15 | ≈ 4,166.667 |
| 20 | ≈ 5,555.556 |
| 25 | ≈ 6,944.444 |
| 30 | ≈ 8,333.333 |
| 40 | ≈ 11,111.11 |
| 50 | ≈ 13,888.89 |
| 60 | ≈ 16,666.67 |
| 70 | ≈ 19,444.44 |
| 75 | ≈ 20,833.33 |
| 80 | ≈ 22,222.22 |
| 90 | 25,000 |
| 100 | ≈ 27,777.78 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Kilowatt-hours to Gigajoules
| Kilowatt-hours (kWh) | Gigajoules (GJ) |
|---|---|
| 1 | 0.0036 |
| 2 | 0.0072 |
| 3 | 0.0108 |
| 4 | 0.0144 |
| 5 | 0.018 |
| 6 | 0.0216 |
| 7 | 0.0252 |
| 8 | 0.0288 |
| 9 | 0.0324 |
| 10 | 0.036 |
| 15 | 0.054 |
| 20 | 0.072 |
| 25 | 0.09 |
| 30 | 0.108 |
| 40 | 0.144 |
| 50 | 0.18 |
| 60 | 0.216 |
| 70 | 0.252 |
| 75 | 0.27 |
| 80 | 0.288 |
| 90 | 0.324 |
| 100 | 0.36 |
Unit definitions
- Gigajoules GJ
- Exactly 10⁹ joules, used for gas and heat billing.
- Kilowatt-hours kWh
- One kilowatt for one hour: exactly 3.6 megajoules; the unit on electricity bills.
Questions people ask
Gigajoules to Kilowatt-hours: what is the conversion factor?
One GJ is ≈ 277.7777778 kWh.
How do I convert Gigajoules to Kilowatt-hours?
Use the formula above. For example, 100 GJ = ≈ 27,777.77778 kWh.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.