Home energy tools
Start with a working calculator or source-backed reference. Every cost tool uses the rate and currency you enter—never a hidden regional default.
Available now
Working calculators and references, with explicit inputs and no hidden tariff defaults.
Electricity CostCalculate cost from electricity use in kWh and your own rate.AvailableAppliance Running CostSee what an appliance costs to run by hour, day, month, or year.AvailableElectricity Bill EstimatorEstimate a monthly bill from kWh, your rate, and optional supplied charges.AvailableWatts ↔ kWh CalculatorCalculate energy from power and time, or power from energy and time.AvailableWatts, Volts & AmpsSolve the basic P = V × I relationship from two known values.AvailableStandby Power CostEstimate daily, monthly, and yearly cost from standby watts and hours.AvailableAppliance Wattage & UsageCheck source-backed appliance power and energy-use references.AvailableEnergy Conversion TablesConvert common power, energy, heating, and electrical units.Available