Convert watt-hour to joule
1 Wh = 3,600 J
1 Wh = 3,600 J
1 Wh in every energy unit
| joule | 3,600 J |
| kilojoule | 3.6 kJ |
| megajoule | 0.0036 MJ |
| calorie | 860 cal |
| kilocalorie | 0.86 kcal |
| watt-hour | 1 Wh |
| kilowatt-hour | 0.001 kWh |
| British thermal unit | 3.41 BTU |
| foot-pound | 2,660 ft⋅lb |
| electron volt | 2.25e+22 eV |
| kiloelectron volt | 2.25e+19 keV |
| megaelectron volt | 2.25e+16 MeV |
How the conversion works
Multiply by 3,600 to go from watt-hour to joule, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? joule to watt-hour — 1 J = 0.0002777777778 Wh.
watt-hour to joule — common values
| 1 Wh | 3,600 J |
| 2 Wh | 7,200 J |
| 3 Wh | 10,800 J |
| 5 Wh | 18,000 J |
| 10 Wh | 36,000 J |
| 15 Wh | 54,000 J |
| 20 Wh | 72,000 J |
| 25 Wh | 90,000 J |
| 50 Wh | 180,000 J |
| 75 Wh | 270,000 J |
| 100 Wh | 360,000 J |
| 250 Wh | 900,000 J |
| 500 Wh | 1,800,000 J |
| 1000 Wh | 3,600,000 J |