Kitchen Hood CFM Calculator

All Calculations are done based on recommendations by the Home Ventillation Institute (HVI).

NOTE:These are just Recommendations for a clean Kitchen and you're free to pick based on your own Judgement.

Feel free to enter Units either in Inches, Feet or Centimeters. But don't change units within a certain section; for example: In Part B you may enter units in Inches and Choose to enter in Feet for Part C. But don't enter some if it Inches and the rest in feet in Part C as this will give you a wrong answer (Mostly 0 CFM).

Part A: Based on BTU of the Cooking Range

Please enter whole numbers without spaces and commas. Example: 20000 and not 20,000. If you're not sure about your BTU (British Transfer Units) look into your Cooking Range Manual or look it up online.

BTU:

Part B: Based on Layout and Range Size

Fill in the Necessary Columns and leave out any that aren't applicable to you. Please be Consistent with your units for best results.

For Wall Mount or Under Cabinet Range Hood Requirements - Where the Range is against a Wall

Enter the Length of your Range Hood from the Wall to the Front

In Inches:---{OR}--- In Feet: ---{OR}--- In Centimeters:

For Island Range Hood Requirements - Island Ranges

Enter the Length of your Range Hood from the back of the stove to the front

In Inches:---{OR}--- In Feet:---{OR}--- In Centimeters:

Part C: Based on the size of your kitchen

As per HVI Standards, a Range Hood is supposed to completely cycle all the air in your kitchen at least 15 times every hour. Which turns out to be once every 4 minutes. Therefore, we're now going to calculate the Volume of your Kitchen:

We're going to first calculate the Area of your Kitchen, Use a measuring tape to measure the Length and Breadth OR if you know the Area Enter the Area directly.

Length of your Kitchen

In Inches:---{OR}--- In Feet:---{OR}--- In Centimeters:

Breadth or Width of your Kitchen

In Inches:---{OR}--- In Feet:---{OR}--- In Centimeters:

We now need to Calculate the Volume in order to calculate the necessary CFM.

Height from the floor to the ceiling:

In Inches:---{OR}--- In Feet:---{OR}--- In Centimeters:

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