Convert watt-hour to megajoule
1 Wh = 0.0036 MJ
1 Wh = 0.0036 MJ
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 0.0036 to go from watt-hour to megajoule, 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? megajoule to watt-hour — 1 MJ = 277.7777778 Wh.
watt-hour to megajoule — common values
| 1 Wh | 0.0036 MJ |
| 2 Wh | 0.0072 MJ |
| 3 Wh | 0.0108 MJ |
| 5 Wh | 0.018 MJ |
| 10 Wh | 0.036 MJ |
| 15 Wh | 0.054 MJ |
| 20 Wh | 0.072 MJ |
| 25 Wh | 0.09 MJ |
| 50 Wh | 0.18 MJ |
| 75 Wh | 0.27 MJ |
| 100 Wh | 0.36 MJ |
| 250 Wh | 0.9 MJ |
| 500 Wh | 1.8 MJ |
| 1000 Wh | 3.6 MJ |