Ventilation Calculator

Simplified ASHRAE 62.1-2019 §6.2.2 — per-zone outdoor air (Vbz / Voz)
Zone Inputs
ASHRAE 62.1 Results
People Component (Rp × P)
CFM
Area Component (Ra × A)
CFM
Vbz — Breathing Zone OA
CFM
Voz — Zone OA Required
CFM (Vbz / Ez)
OA per Person
CFM / person
OA per SF
CFM / ft²
ASHRAE 62.1-2019 Table 6.2.2.1 — Common Rates
Space TypeRp (CFM/person)Ra (CFM/ft²)
Office — Open Plan50.06
Office — Private50.06
Conference Room50.06
Classroom (K–12)100.12
Classroom (College)7.50.06
Lobby / Reception7.50.06
Break Room50.06
Restaurant — Dining7.50.18
Retail Store7.50.12
Gym / Fitness100.18
Hotel Room50.06
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