Direct conversion
Result
—
—
—kWh
—food Calories
—BTU (IT)
—kg TNT equiv.
All equivalent units
Power × time → energy & cost
Energy used
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—
Battery runtime estimator
Estimated runtime
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Runtime ≈ usable Wh ÷ watts. Real batteries also vary with temperature, age, discharge rate and inverter standby draw.
Reference constants
| Unit | J per unit |
|---|
Display
Definitions used
Wh and kWh use exactly 3600 J per Wh. The thermochemical calorie is 4.184 J. Electronvolt uses the exact elementary charge after the 2019 SI redefinition. BTU is the International Table BTU. TNT equivalent uses 4.184 GJ per metric ton of TNT.