Convert watt-hours to gigajoules
1 Wh = 0.0000036 GJ — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.000 003 6GJ
As a fraction: 9/2500000
More converter tools
Readable results
Ranges, ± tolerances, feet/inches and clock durations work in the value field.
Unit picker
Export this result
1 Wh = 0.0000036 GJ
Show this value in all 39 energy & work units
- Petajoules PJ 3.6e-12
- Terajoules TJ 3.6e-9
- Gigajoules GJ 0.000 003 6
- Megajoules MJ 0.0036
- Kilojoules kJ 3.6
- Joules J 3600
- Millijoules mJ 3 600 000
- Microjoules µJ 3 600 000 000
- Nanojoules nJ 3 600 000 000 000
- Watt-hours Wh 1
- Kilowatt-hours kWh 0.001
- Megawatt-hours MWh 0.000 001
- Gigawatt-hours GWh 1e-9
- Terawatt-hours TWh 1e-12
- Calorie (thermochemical)s cal 860.420 650 096
- Kilocalories kcal 0.860 420 650 096
- Calorie (IT)s cal (IT) 859.845 227 859
- Kilocalorie (IT)s kcal (IT) 0.859 845 227 859
- British thermal units BTU 3.412 141 633 13
- BTU (thermochemical)s BTU (th) 3.414 425 949 64
- Million BTUs MMBTU 0.000 003 412 141 633 13
- Therm (US)s thm 0.000 034 129 563 407
- Therm (EC)s thm (EC) 0.000 034 121 411 564 9
- Electronvolts eV 2.24694326681e+22
- Kiloelectronvolts keV 2.24694326681e+19
- Megaelectronvolts MeV 2.24694326681e+16
- Gigaelectronvolts GeV 22 469 432 668 100
- Teraelectronvolts TeV 22 469 432 668.1
- Ergs erg 36 000 000 000
- Foot-pounds ft·lbf 2655.223 737 4
- Inch-pounds in·lbf 31 862.684 848 8
- Foot-poundals ft·pdl 85 429.297 455 2
- Horsepower-hours hp·h 0.001 341 022 089 6
- Tonne of TNTs t TNT 0.000 000 860 420 650 096
- Kiloton of TNTs kt TNT 8.60420650096e-10
- Megaton of TNTs Mt TNT 8.60420650096e-13
- Hartrees Eₕ 8.25736420223e+20
- Rydbergs Ry 1.65147284045e+21
- Quads quad 3.41214163313e-15
Every row is Watt-hour (Wh) converted through the joule, in exact rational arithmetic.
How to convert watt-hours to gigajoules
Multiply the number of watt-hours by 0.0000036 to get gigajoules.
The exact factor is 0.0000036 — as a fraction, 9/2500000.
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 |
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 |
Frequently asked
How many gigajoules are in a watt-hour?
One watt-hour equals 0.0000036 gigajoules (Wh → GJ). That figure is exact, not rounded.
How do you convert watt-hours to gigajoules?
Multiply the number of watt-hours by 0.0000036 to get gigajoules.
What is 1 GJ in watt-hours?
One gigajoule is 277777.7778 watt-hours.
What is 10 Wh in GJ?
10 Wh = 0.000 036 GJ.