Fan Power Consumption Calculator
Calculate fan electricity consumption and monthly cost from wattage, usage hours, and tariff.
Last reviewed by the Radiatus Cloud team
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Estimate what a fan costs to run
Even a low-power appliance adds up over time, and knowing a fan’s running cost helps. This calculator computes a fan’s electricity consumption and monthly cost from its wattage, hours of use and electricity price.
Why running cost is usage times price
An appliance’s cost to run is its power draw times how long it runs times the electricity price, and a fan, though low-power, runs for many hours, so the cost accumulates. Multiplying the wattage by the hours used to get energy, then by the price, gives the monthly cost. Seeing it helps you understand your bill and compare an efficient fan against an inefficient one, since the difference over a season can be meaningful even for a small appliance. It turns a vague sense that things cost something into a concrete figure.
A planning estimate
These are estimates from a standard method for general planning, not professional advice; confirm anything important for your specific situation. It runs entirely in your browser, so nothing you enter is uploaded and it works without an account, keeping your data on your own machine.
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Frequently Asked Questions
How is a fan’s running cost calculated?
As its wattage times the hours of use, giving energy in kilowatt-hours, times the electricity price per unit, for the monthly cost.
Why does a low-power fan still cost to run?
Because it runs for many hours, and cost is power times time. Even a small draw accumulates over a season of continuous use.
How can I reduce the cost?
Use an efficient fan, run it only when needed, and choose lower speeds where possible, all of which reduce the energy used.
Why compare fans on running cost?
Because the difference between an efficient and inefficient fan over a season can outweigh the purchase price difference.
Is my data uploaded?
No. The calculation runs entirely in your browser.
Privacy & Security
Calculated locally in your browser. No data is sent to any server.
How to Use
Enter fan wattage and usage hours to estimate monthly cost.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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