Estimate how much electricity an appliance uses
and how much it costs to run based on its power,
daily usage and electricity price.
Check the appliance label or manual for its wattage.
Enter the cost charged for one kilowatt-hour (kWh).
Electricity Cost
Estimated Cost for Selected Period
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Daily Usage
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Period Usage
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Daily Cost
Appliance Power
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Daily Operating Time
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Selected Period
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Electricity Rate
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Estimated 30-Day Usage
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Estimated 30-Day Cost
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Estimated Yearly Usage
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Estimated Yearly Cost
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How is electricity usage calculated?
Convert Watts to Kilowatts
Kilowatts = Watts ÷ 1,000
Daily Energy
kWh/day = Kilowatts × Hours Used
Electricity Cost
Cost = kWh × Electricity Rate
Example:
Appliance = 1,500 W
Usage = 8 hours/day
Period = 30 days
Electricity Rate = ₹8/kWh
Daily Energy:
(1,500 ÷ 1,000) × 8
= 12 kWh/day
30-Day Energy:
12 × 30 = 360 kWh
Cost:
360 × ₹8
= ₹2,880
1 electricity unit = 1 kWh.
Therefore, an appliance using 360 kWh has consumed
360 electricity units.
This calculator assumes one constant price per kWh.
Actual electricity bills can differ because utilities
may use slab/tier rates, fixed charges, taxes, subsidies,
fuel charges or other fees.
Appliance wattage is often the rated or maximum power.
Devices such as air conditioners and refrigerators may
cycle on and off, so their actual consumption can differ
from a simple wattage × time estimate.
Vedicaly's Electricity Cost Calculator helps estimate electricity consumption and cost based on appliance power, daily usage time, number of days and electricity rate.
How to Estimate Electricity Cost
Enter the appliance power in watts, hours used per day, number of days and your electricity rate per kilowatt-hour. The calculator will estimate energy consumption and cost.
How is Electricity Consumption Calculated?
Energy consumption in kilowatt-hours can be estimated by converting appliance power from watts to kilowatts and multiplying it by the number of hours the appliance operates.
What is a kilowatt-hour?
A kilowatt-hour, or kWh, is a unit of energy commonly used for measuring electricity consumption.
Will the estimate exactly match my electricity bill?
Not necessarily. Actual bills can include taxes, fixed charges, tiered rates and other fees that are not represented by a simple usage calculation.
