Convert gigajoules to watt-hours
1 GJ = 277777.777778 Wh — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
277 777.777 778Wh
As a fraction: 2500000/9
1 GJ = 277777.777778 Wh
How to convert gigajoules to watt-hours
Multiply the number of gigajoules by 277777.777778 to get watt-hours.
Gigajoule to Watt-hour conversion table
| Gigajoules (GJ) | Watt-hours (Wh) |
|---|---|
| 1 GJ | 277 777.78 |
| 2 GJ | 555 555.56 |
| 3 GJ | 833 333.33 |
| 5 GJ | 1 388 888.9 |
| 10 GJ | 2 777 777.8 |
| 20 GJ | 5 555 555.6 |
| 25 GJ | 6 944 444.4 |
| 50 GJ | 13 888 889 |
| 100 GJ | 27 777 778 |
| 250 GJ | 69 444 444 |
| 500 GJ | 138 888 890 |
| 1000 GJ | 277 777 780 |
Watt-hour to Gigajoule conversion table
| Watt-hours (Wh) | Gigajoules (GJ) |
|---|---|
| 1 Wh | 0.000 003 6 |
| 2 Wh | 0.000 007 2 |
| 3 Wh | 0.000 010 8 |
| 5 Wh | 0.000 018 |
| 10 Wh | 0.000 036 |
| 20 Wh | 0.000 072 |
| 25 Wh | 0.000 09 |
| 50 Wh | 0.000 18 |
| 100 Wh | 0.000 36 |
| 250 Wh | 0.0009 |
| 500 Wh | 0.0018 |
| 1000 Wh | 0.0036 |
Frequently asked
How many watt-hours are in a gigajoule?
One gigajoule equals 277777.7778 watt-hours (GJ → Wh). That figure is exact, not rounded.
How do you convert gigajoules to watt-hours?
Multiply the number of gigajoules by 277777.777778 to get watt-hours.
What is 1 Wh in gigajoules?
One watt-hour is 0.0000036 gigajoules.
What is 10 GJ in Wh?
10 GJ = 2 777 777.8 Wh.