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Calculate with your energy use and rate
Electricity cost calculator.
Use the best energy figure you have. Enter prices in currency units per kWh, such as 0.20 for 20 cents.
What the calculator does
It calculates appliance electricity cost from your energy use and price per kWh. Account for other bill charges separately.
The formulas
Daily kWh = watts / 1,000 * daily hours * (active percentage / 100)
Cost = kWh × price per kWh
For cycle mode, daily energy is cycle kWh × weekly cycles ÷ 7. For an annual label, daily energy is annual kWh ÷ 365. The year estimate always uses 365 days.
A worked example
A hypothetical 500 W device running steadily for four hours uses 2 kWh. At an example price of $0.20/kWh, that is $0.40 a day, or $12 for 30 days. Replace the example inputs with your appliance data and local electricity rate.
Choose the right method
For fridges, dehumidifiers, and air conditioners, measured daily kWh usually gives a closer estimate than rated watts. For a dryer or dishwasher, use measured energy per complete cycle. Annual labels are standardized comparisons.
The active-share setting scales the watts estimate. It excludes energy used in standby and fan-only modes. Do not guess an active percentage when a measurement is available.
Costs to add separately
Fixed fees, taxes that are not in the entered rate, tier changes, separate hot-water energy, and seasonal changes. Currency selection changes formatting only. It does not convert exchange rates.
Read how to calculate appliance electricity cost and why cycling matters.
Sources
U.S. EIA: How electricity units are measured explains the units. FTC EnergyGuide guidance explains how to use energy labels.
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