CALCULATOR
Joules to Watt-hours Converter
Convert joules to watt-hours. Enter a value to update the result.
How the calculation works
Watt-hours = Joules × 0.000277777777778.
Worked example
With joules 1 J, watt-hours is 0.0002777777778 Wh.
Assumptions and limits
Standard energy unit conversion. Results use finite floating-point arithmetic.