Cost to Run a Fan Calculator

Estimate how much it costs to run a fan based on wattage, daily usage, and your electricity rate. Try each speed setting with your typical runtime to identify the lowest-cost comfort level for your space.

Fast estimate No signup Updated for 2026 rates

Typical electricity cost

How much does a Fan cost to run?

Based on typical usage

A Fan typically uses about 49 to 75 watts, costing around $0.01 per hour at $0.15 per kWh.

At typical use (8 hours per day), that's about $2.70 per month and $32.85 per year.

Per hour $0.01
Daily $0.09
Monthly $2.70
Yearly $32.85

Based on

  • 75 watts
  • 8 hours per day
  • High speed setting
  • $0.15 per kWh

What affects cost most

  • Average hours used per day
  • Electricity rate in dollars per kWh
  • Speed or performance setting
  • Weather, insulation, and thermostat behavior

How it works: Daily cost uses wattage, hours per day, and electricity rate. Monthly uses daily × 30; yearly uses daily × 365.

Use the calculator below to estimate cost based on your own wattage, usage time, and electricity rate.

Calculator

1. Device

Effective wattage at High speed: 75 W

Keep wattage as the base rating. The selected speed changes the effective wattage used in the estimate.

2. Usage

Quick presets

3. Rate

Enter your values and click Calculate Cost.

How Much Electricity Does a Fan Use?

These example monthly costs show how runtime and performance settings change the bill.

Example monthly costs

  • Light Use 4.8 hours per day and High speed
    $1.62/month
  • Typical Use 8 hours per day and High speed
    $2.70/month
  • Heavy Use 11.2 hours per day and High speed
    $3.78/month

Get a better estimate and keep costs down

Defaults are a starting point. Real cost changes most when runtime, wattage, and your electricity rate differ from the benchmark assumptions.

What changes cost most

  • Average hours used per day
  • Electricity rate in dollars per kWh
  • Speed or performance setting
  • Weather, insulation, and thermostat behavior

How to get a better estimate and lower cost

  • Replace the default electricity rate with the actual rate from your latest power bill.
  • Adjust daily runtime to match how long you actually use the equipment.
  • Use the matching speed or power setting so the wattage estimate tracks the way you really run it.
  • Use lower speed settings when comfortable.
  • Turn fans off when rooms are empty.
  • Clean blades and grills for better airflow.

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