5 CALCULATORS
Energy Calculators
Energy calculators with formulas, worked examples, and documented assumptions.
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5 toolsEnergy
Appliance Electricity Cost Calculator
Estimate running and standby energy costs for an appliance over a chosen period.
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Battery Runtime Calculator
Estimate constant-load runtime from battery capacity, usable energy, and conversion losses.
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EV Charging Calculator
Estimate EV charging time and energy cost between two battery charge levels.
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Heat Pump Cost Calculator
Estimate heat-pump electricity cost from delivered heat, COP, and resistance backup share.
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Solar Energy Calculator
Estimate solar generation and energy value using a supplied solar-resource assumption.
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