Ventilation Rate Calculator
Calculate required outdoor air ventilation rates per ASHRAE Standard 62.1 based on occupancy and space type.
Inputs
Office: 5 CFM/person; Classroom: 10 CFM/person; Restaurant: 7.5 CFM/person per ASHRAE 62.1
sq ft
ASHRAE 62.1 area rate: Office = 0.06 CFM/ft²; Classroom = 0.12 CFM/ft²
ASHRAE 62.1: Office 5 CFM/person; Classroom 10 CFM/person; Gym 20 CFM/person
Results
Required Outdoor Air
220 CFM
Total Ventilation
220 CFM
People Component100 CFM
Area Component120 CFM
How to Use This Calculator
- Enter Number of Occupants, Floor Area, and Space Type.
- Review Required Outdoor Air (CFM) and Total Ventilation (CFM).
- Use People Component (CFM) and Area Component (CFM) to inform your decision.
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