Convert watt-hours to joules
1 Wh = 3600 J — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
3600J
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1 Wh = 3600 J
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 joules
Multiply the number of watt-hours by 3600 to get joules.
The exact factor is 3600 .
Watt-hour to Joule conversion table
| Watt-hours (Wh) | Joules (J) |
|---|---|
| 1 Wh | 3600 |
| 2 Wh | 7200 |
| 3 Wh | 10 800 |
| 5 Wh | 18 000 |
| 10 Wh | 36 000 |
| 20 Wh | 72 000 |
| 25 Wh | 90 000 |
| 50 Wh | 180 000 |
| 100 Wh | 360 000 |
| 250 Wh | 900 000 |
| 500 Wh | 1 800 000 |
| 1000 Wh | 3 600 000 |
Joule to Watt-hour conversion table
| Joules (J) | Watt-hours (Wh) |
|---|---|
| 1 J | 0.000 277 777 78 |
| 2 J | 0.000 555 555 56 |
| 3 J | 0.000 833 333 33 |
| 5 J | 0.001 388 888 9 |
| 10 J | 0.002 777 777 8 |
| 20 J | 0.005 555 555 6 |
| 25 J | 0.006 944 444 4 |
| 50 J | 0.013 888 889 |
| 100 J | 0.027 777 778 |
| 250 J | 0.069 444 444 |
| 500 J | 0.138 888 89 |
| 1000 J | 0.277 777 78 |
Frequently asked
How many joules are in a watt-hour?
One watt-hour equals 3600 joules (Wh → J). That figure is exact, not rounded.
How do you convert watt-hours to joules?
Multiply the number of watt-hours by 3600 to get joules.
What is 1 J in watt-hours?
One joule is 0.0002777777778 watt-hours.
What is 10 Wh in J?
10 Wh = 36 000 J.