Occupant Load Calculator

Calculate maximum occupancy from floor area and use type per IBC Table 1004.5.

Gross Floor Area (sq ft)

Use/Occupancy Type

Accessible Area (%)

Number of Floors

Tab to move between fields

Occupants per Floor

Total Occupant Load

Load Factor (sq ft/person)100

Minimum Exits Required2

Plumbing Fixtures Needed3

Est. Parking Spaces34

How to Use This Calculator

Enter Gross Floor Area (sq ft), Use/Occupancy Type, and Accessible Area (%).
Set Number of Floors.
Review Occupants per Floor and Total Occupant Load.
Use Load Factor (sq ft/person) and Minimum Exits Required to inform your decision.

How the result changes with Gross Floor Area (sq ft)

Gross Floor Area (sq ft): Total gross floor area per floor.
Use/Occupancy Type: 1=Assembly-concentrated, 2=Assembly-standing, 3=Assembly-tables, 4=Business, 5=Classroom, 6=Shop/Lab, 7=Mercantile-ground, 8=Mercantile-upper, 9=Industrial, 10=Storage.
Accessible Area (%): Percentage of floor area accessible to occupants.
Number of Floors: Number of floors with this use type.

Identify Input Parameters
4 parameters
Gross Floor Area (sq ft) = 10000, Use/Occupancy Type = 4, Accessible Area (%) = 85, Number of Floors = 1 = 4 input(s) provided
Calculate Occupants per Floor
Occupants per Floor
85 = 85
Calculate Total Occupant Load
Total Occupant Load
85 = 85
Calculate Load Factor
Load Factor
100 = 100
Calculate Minimum Exits Required
2 = 2