Megajoules to Watt-hours
Convert megajoules (MJ) to watt-hours (Wh). Live results, batch values, CSV export, formula and examples. Free, no sign-up.
Runs on your device · no data upload
Up to 500 values. Calculations stay on this device. Decimal point: dot. Results use floating-point arithmetic and the selected display precision.
Results
1 values converted
| row | input | from | result | to | error |
|---|---|---|---|---|---|
| 1 | 1 | MJ | 277.777777778 | Wh | — |
Calories are thermochemical (4.184 joules), BTU uses the International Table definition, and electronvolts use the exact elementary charge.
Raw response
[
{
"row": 1,
"input": 1,
"from": "MJ",
"result": "277.777777778",
"to": "Wh"
}
]How to convert megajoules to watt-hours
Enter one value or paste one value per line. Change precision, swap units, then copy or export the results. Invalid values are reported individually.
result = (value × 1000000 + 0 − 0) ÷ 3600
Calories are thermochemical (4.184 joules), BTU uses the International Table definition, and electronvolts use the exact elementary charge.
| Megajoules (MJ) | Watt-hours (Wh) |
|---|---|
| 0 | 0 |
| 1 | 277.777777778 |
| 10 | 2777.77777778 |
| 100 | 27777.7777778 |
Reference: NIST unit conversion factors. Decimal and binary storage prefixes are distinct; rounded display values do not change the underlying calculation.