Convert Watt-hours to Megajoules

Use our accurate converter to change watt-hours into megajoules. This tool is simple to use and works instantly.

How to Calculate

To change watt-hours to megajoules, you just need to know the conversion factor.

Rule: 1 Watt-hours = 0.0036 Megajoules

Watt-hours to Megajoules

Pre-defined calculator for direct watt-hours to megajoules conversion.

From

Watt-hours (Wh)

To (Result)

Megajoules (MJ)

Formula: 1 Watt-hours = 0.0036 Megajoules

Definition: A watt-hour is the energy used by one watt of power for one hour.

History: It is a derived unit used mostly for electricity.

Where it is used: Used to talk about how much energy a battery can hold.

Calculation: To convert watt-hours to megajoules, multiply the value by the conversion factor (0.0036).

Example: convert 15 wh to mj:
15 wh = 15 × 0.0036 mj = 0.054 mj

Explore all available conversion pairs for watt-hours to other professional energy metrics.

Access our high-fidelity calculators for other measurement systems and engineering metrics.