▣ CALCULATORS Updated July 25, 2026

Electricity Cost Calculator

Turn watts and hours into a real number on your electricity bill.

Appliance power (watts)
Hours used per day
Electricity rate (per kWh)
Result
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How it works

Wattage divided by 1000 gives kilowatts; multiplied by daily hours it gives kilowatt-hours per day, which is then multiplied by your tariff to project daily, monthly and annual running cost.

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Frequently asked questions

Where do I find an appliance's wattage?

It is printed on the rating label or in the manual, usually as W or kW near the voltage.

What is a kWh?

One kilowatt-hour is a 1000-watt appliance running for one hour — the unit your utility bills you in.

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