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Ceiling Fan Size Calculator

Enter room length and width along with the ceiling height in the tool and the calculator will find the ceiling fan size.


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The ceiling fan size calculator calculates the size of the ceiling fan on the basis of room size, ceiling height, blade span and pitch.

Reasons to Calculate Ceiling Fan Size:

The ceiling fan size is important to calculate for a number of reasons:
  • It ensures optimal air circulation 
  • Ensure the temperature regulation 
  • Reduces the additional heating or cooling systems
  • Increases the energy efficiency 
 It is essential to choose the right ceiling fan size to ensure optimal circulation and comfort by using the ceiling fan calculator. 

Factors Affecting Ceiling Fans Size:

There are multiple factors to calculate ceiling fan size:
  • Room Size
  • Ceiling Height
  • Blade Span
  • Blade Pitch
The larger room normally does require a greater blade span to ensure adequate air circulation. The ceiling height affects the optimal distance between the fan and the floor. The blade pitch is the angle of the fan blades and ensures better circulation of the air in the room. A ceiling fan size calculator is useful to simplify the process of selecting the ideal ceiling fan on the basis of the factors like room size, ceiling height, blade span and blade pitch.

How to Calculate Ceiling Fan Size?

The step-by-step procedure for calculating the ceiling fan size
  1. Measure exactly the room length and width 
  2. Find the square footage of the room or area
  3. Measure the ceiling height of the room 

The Ceiling Fan CFM Chart:

The fan sizing calculation of various rooms sizes is given in the ceiling fan CFM chart
Square-Footage Fan-Size
<= 75 "29 to 36" inches
<= 144 "36 to 42" inches"
<= 225 "44 to 50" inches"
<= 400 "52 -60" inches"
>400 62″ inches"
The fan blade pitch calculator calculates ceiling fan size for various rooms depending on their square area. There is a specific range of room areas for a particular size of ceiling fan.

Working of Ceiling Fan Size Calculator:

The ceiling fan CFM calculator needs simple input to calculate ceiling fan size.  Let's see how! Input:
  • Enter the length, width of the room
  • Enter the height of the ceiling fan
  • Tap calculate 
  • Recommended ceiling fan size
  • Recommended down-rod length


What Size of Ceiling Fan for a 12x12 Room?

A 12x12 room would have an area of 144 square feet, which means you'll need a large ceiling fan between 36 and 50 inches.

Are Bigger Fans Better?

Larger ceiling fans offer numerous advantages:
  •  Improved air circulation
  •  Increased energy efficiency 
  • Enhanced cooling effect
  • Reduced noise level
The larger size fans are better but you may need the appropriate space to install a large fan, for precise estimation of the fan size use a ceiling fan sizing calculator

Is a 3-Blade or 4-Blade Fan Better?

The three-blade fan has fewer blades, which means less noise and lower energy consumption. Four blades provide more airflow, but they're louder and use more power. They're ideal in larger spaces.


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