Calculate how much electricity your appliances use and estimate their hourly, daily, monthly and yearly running costs. Add multiple appliances to estimate your combined electricity consumption and bill.
Choose a preset or enter the wattage printed on your appliance label.
Live estimate from all appliances in your list.
Including your optional fixed monthly charge.
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Want to know how much electricity your home or office appliances consume and how much they add to your electricity bill? Our free Appliance Electricity Cost Calculator helps you estimate power consumption, electricity units (kWh), and running costs for individual appliances or multiple devices. Calculate the electricity cost per hour, day, month, or year using appliance wattage, daily usage time, quantity, and your electricity rate.
Whether you want to calculate the running cost of an air conditioner, refrigerator, washing machine, television, fan, geyser, microwave, computer, water pump, or another electrical device, this appliance energy consumption calculator makes the process simple. Enter the appliance power rating, estimate how long it operates, and provide your electricity price per unit to get an easy-to-understand energy and cost breakdown.
Estimate electricity usage in kWh, daily and monthly energy costs, yearly running expenses, cost per hour, and the combined consumption of multiple electrical appliances.
An appliance electricity calculator estimates how much electrical energy a device uses over a selected period. Electrical appliances have power ratings measured in watts (W) or kilowatts (kW). The amount of electricity consumed depends on the device's power, operating duration, and how frequently it runs.
Electricity consumption is commonly measured in kilowatt-hours (kWh), also called electricity units. In India, one unit of electricity generally equals one kilowatt-hour. By entering your local electricity rate, you can use this appliance electric consumption calculator to estimate how much it costs to operate a device and compare the energy usage of different appliances.
You can calculate the estimated energy consumption of an appliance using its power rating and operating time. If an appliance runs continuously at its rated power, use the following formula:
Energy Consumption (kWh) = Power (W) × Operating Hours ÷ 1,000For multiple appliances, multiply the consumption by the number of devices. If an appliance does not operate continuously at full power, use a realistic average operating percentage to improve the estimate.
Daily Consumption = Power (W) × Quantity × Hours per Day × Usage Fraction ÷ 1,000 Electricity Cost = Energy Consumption (kWh) × Rate per UnitFor example, a 100-watt fan operating for 10 hours at full rated power uses approximately 1 kWh per day. At an assumed rate of ₹8 per unit, its estimated energy cost is ₹8 per day, excluding fixed charges and other bill adjustments.
Actual consumption may differ because of thermostat cycling, compressor operation, changing loads, standby power, appliance efficiency, and usage patterns.
Choose an available appliance preset or enter a custom appliance name and power rating.
Check the product label, user manual, or manufacturer specifications for its wattage.
Enter how many appliances you use and the approximate number of operating hours per day.
Adjust the usage percentage when the appliance does not run continuously at full power, and enter your rate per unit.
After entering the details, review the estimated hourly, daily, monthly, and yearly consumption and costs. Add more appliances to estimate the combined running cost of your home or office equipment. If your calculator includes monthly fixed charges, you can also account for those separately in the total estimate.
Understanding energy costs across different periods can help you identify high-consumption devices and plan electricity usage more effectively.
Appliance power ratings can vary significantly between models. The examples below are illustrative estimates, not fixed ratings for every product.
For a more useful estimate, use the actual power rating printed on the appliance or published in its official specifications. For devices that cycle on and off, use measured average power or a realistic usage percentage instead of assuming continuous full-power operation.
Small changes in usage habits can help reduce unnecessary electricity consumption. Switch off appliances when they are not required, avoid leaving devices in standby mode unnecessarily, maintain air conditioners and refrigerators according to their manuals, and select energy-efficient products suited to your needs.
You can also compare the estimated running cost of different appliances before making a purchase. Keep in mind that the lowest wattage does not always mean the lowest overall cost; operating performance, capacity, efficiency, and the amount of work performed also matter.
Multiply its power in watts by the number of operating hours, then divide by 1,000 to estimate energy consumption in kWh. Multiply the resulting units by your electricity rate to estimate the energy cost.
One unit of electricity generally means one kilowatt-hour (kWh). It represents the energy used by a 1,000-watt appliance operating for one hour at that power level.
Divide the appliance's wattage by 1,000 and multiply the result by your electricity rate per kWh. This gives an estimate for one hour at the assumed power level.
Yes. Add each appliance's power rating, quantity, operating hours, and usage estimate. The calculator can combine their estimated energy consumption and costs.
It provides an estimate based on the information entered. Actual electricity consumption can differ because of changing loads, operating cycles, efficiency, standby usage, and local billing rules. A plug-in energy meter or smart meter can help measure actual consumption for compatible devices.
The estimate uses the electricity rate entered by the user. Unless separately supported by the calculator, it does not automatically calculate slab-based tariffs, subsidies, taxes, fuel adjustments, or every charge on an electricity bill.
Yes. Enter the appliance's power rating and estimated usage. For devices with compressors or variable-speed motors, use a realistic average power estimate for more representative results.
Yes. Use the calculator on this page to estimate electricity consumption and appliance running costs without manually calculating every formula.