Electricity Bill Calculator

Estimate your monthly electricity bill based on appliance usage, wattage, hours of use, and your electricity tariff rate.

Enter Values

Total Wattage (W)

Hours of Use per Day

Days per Month

Electricity Rate (per kWh)

Enter values above and click Calculate to see your result.

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Cost = (Watts × Hours × Days) ÷ 1000 × Rate

Converts watt-hours into kilowatt-hours (kWh), then multiplies by your electricity rate to find the total cost.

AC unit 1500W, 8 hrs/day, 30 days, rate $0.12/kWh → 1.5 × 8 × 30 = 360 kWh × $0.12 = $43.20/month.

Check the label on the appliance or its user manual. Common values: LED bulb 10W, Fan 75W, AC 1500W, Fridge 150W.

A kilowatt-hour (kWh) is 1000 watts used for 1 hour. It is the standard unit electricity companies use to bill you.

Yes. Add up the wattage of all appliances running at the same time, or calculate each separately and sum the costs.

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I can help you understand the electricity bill calculator formula, interpret your results, and answer follow-up questions.

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