Joule (J)
Kilojoule (kJ)
Megajoule (MJ)
Gigajoule (GJ)
Kilowatt-hour (kWh)
Megawatt-hour (MWh)
Watt-hour (Wh)
Calorie (cal)
Kilocalorie (kcal)
British Thermal Unit (BTU)
Therm (therm)
Quad (quad)
Electronvolt (eV)
Kiloelectronvolt (keV)
Megaelectronvolt (MeV)
Gigaelectronvolt (GeV)
Erg (erg)
Foot-pound (ft·lb)
Inch-pound (in·lb)
Newton-meter (N·m)
Dyne-centimeter (dyn·cm)
Gram-force-centimeter (gf·cm)
Kilogram-force-meter (kgf·m)
Pound-force-foot (lbf·ft)
Pound-force-inch (lbf·in)
Horsepower-hour (hp·h)
Ton-hour (Refrigeration) (ton·h)
Barrel Oil Equivalent (BOE)
Ton Coal Equivalent (TCE)
Ton Oil Equivalent (TOE)
Gallon Gasoline Equivalent (GGE)
Liter Gasoline Equivalent (LGE)
Joule (J)
Kilojoule (kJ)
Megajoule (MJ)
Gigajoule (GJ)
Kilowatt-hour (kWh)
Megawatt-hour (MWh)
Watt-hour (Wh)
Calorie (cal)
Kilocalorie (kcal)
British Thermal Unit (BTU)
Therm (therm)
Quad (quad)
Electronvolt (eV)
Kiloelectronvolt (keV)
Megaelectronvolt (MeV)
Gigaelectronvolt (GeV)
Erg (erg)
Foot-pound (ft·lb)
Inch-pound (in·lb)
Newton-meter (N·m)
Dyne-centimeter (dyn·cm)
Gram-force-centimeter (gf·cm)
Kilogram-force-meter (kgf·m)
Pound-force-foot (lbf·ft)
Pound-force-inch (lbf·in)
Horsepower-hour (hp·h)
Ton-hour (Refrigeration) (ton·h)
Barrel Oil Equivalent (BOE)
Ton Coal Equivalent (TCE)
Ton Oil Equivalent (TOE)
Gallon Gasoline Equivalent (GGE)
Liter Gasoline Equivalent (LGE)
1 joule = 0.000278 watt-hour.
To convert joule to watt-hour, multiply the value by 0.000278.
Example: 20 J = 0.005556 Wh.
Joule to Watt-hour conversion table
| Joule | Watt-hour |
|---|---|
| 1 J | 0.000278 Wh |
| 2 J | 0.000556 Wh |
| 3 J | 0.000833 Wh |
| 4 J | 0.001111 Wh |
| 5 J | 0.001389 Wh |
| 10 J | 0.002778 Wh |
| 20 J | 0.005556 Wh |
| 25 J | 0.006944 Wh |
| 50 J | 0.013889 Wh |
| 100 J | 0.027778 Wh |
| 500 J | 0.138889 Wh |
| 1,000 J | 0.277778 Wh |
Related energy conversions
Frequently asked questions
- How many watt-hour are in a joule?
- There are 0.000278 watt-hour in 1 joule.
- How do I convert joule to watt-hour?
- To convert joule to watt-hour, multiply the value by 0.000278.