Commercial Kitchen Hood Airflow Calculator

Calculate required exhaust and makeup airflow for commercial kitchen hoods based on type and equipment.

Length of the hood along the cooking line.
ft
Depth of the hood (front to back). Typically extends 6 inches beyond equipment.
ft
Hood mounting configuration affects required airflow rates.
Type of cooking equipment determines duty level.

Results

Required Exhaust CFM-CFM
Makeup Air (80%)-CFM
Hood Face Velocity-fpm
Recommended Duct Size-inches
References: NFPA 96 — Ventilation Control of Commercial Cooking, IMC Chapter 5.