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Power Consumption Calculator

Calculate electricity usage and cost for appliances

Last Updated: July 2026
Power consumption of appliance
Hours used per day
Total days of usage
Cost per unit of electricity
Total Energy
—
In kilowatt-hours
Total Cost
—
Electricity cost
Daily Cost
—
Per day cost

Power Consumption Breakdown

ComponentValue

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What Is a Power Consumption Calculator?

A Power Consumption Calculator estimates the electricity usage and cost for any appliance based on its wattage, daily usage hours, and electricity rate. It helps you understand how much energy your appliances consume and how much you pay for it.

This calculator is useful for budgeting electricity expenses, comparing appliance efficiency, and identifying high-consumption devices to reduce your electricity bill.

Power Consumption Formula

Energy (kWh) = (Watts × Hours × Days) / 1000
Cost = Energy (kWh) × Rate (₹/kWh)
Daily Cost = Total Cost / Days
Watts = Appliance powerHours = Daily usageDays = Total daysRate = Cost per kWh

Frequently Asked Questions

How to calculate power consumption?
Power Consumption (kWh) = (Watts × Hours × Days) / 1000. For example, a 1000W appliance used 8 hours daily for 30 days: (1000 × 8 × 30) / 1000 = 240 kWh.
What is a unit of electricity?
One unit of electricity equals 1 kilowatt-hour (kWh). It is the energy consumed by a 1000W appliance running for 1 hour. Electricity bills are calculated based on units consumed.
How to reduce electricity consumption?
Use energy-efficient appliances (5-star rating), turn off when not in use, use LED bulbs, optimize AC temperature (24-26°C), use timers, and maintain appliances regularly.
What is the average electricity rate in India?
Electricity rates vary by state: ₹5-10 per unit for domestic consumers. Maharashtra: ₹8-10, Delhi: ₹6-8, Karnataka: ₹7-9. Commercial rates are higher. Check your electricity bill for exact rate.
How to calculate appliance running cost?
Daily Cost = (Watts × Hours / 1000) × Rate. Monthly Cost = Daily Cost × 30. For example, 100W bulb used 10 hours at ₹8/unit: (100 × 10 / 1000) × 8 = ₹8/day.

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