Occupant Load Calculator
IBC Table 1004.5 — area ÷ factor, rounded upTable 1004.5 factors are largely consistent across IBC editions. Select the edition your jurisdiction has adopted. Your jurisdiction's adopted edition and any local amendments govern — a full scan checks against those.
Occupant load
Enter values above
How this is calculated: Occupant load = floor area ÷ occupant load factor for the function (IBC Table 1004.5), rounded up to the next whole number. The factor and whether to use gross or net area depend on the space's function, not the building's occupancy classification.
Check your full plan set →This calculator uses model IBC factors for general reference. Always verify against the edition and amendments your jurisdiction has adopted.