Electricity Cost Calculator
Estimate appliance energy use and cost from watts, hours and your rate.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Energy (kWh) = watts ÷ 1000 × daily operating hours × days. Multiply by your own price per kWh for estimated energy cost. Enter the rate from your bill; no current utility tariff is assumed. Rated wattage may differ from measured consumption, especially for inverter appliances and thermostats. Fixed charges and taxes are excluded unless you include them in your entered rate.
How to use it (step by step)
- 1Fill in the boxes: “Appliance power (watts)”, “Hours used per day”, “Days”, “Your price per kWh (same currency as bill)”. Example numbers are already there so you can see how it works; replace them with yours.
- 2The result updates instantly as you type (on a phone it is below the boxes).
- 3The bold line is the main answer. Tap Copy next to any value to copy it.
Words to know
- Time card / hours
- Adding up hours worked (minus breaks) to calculate pay. Overtime is time beyond normal hours, often paid at a higher rate.
- Exchange rate
- How much one currency is worth in another. Mid-market is the “middle” rate before banks add their margin.
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