Formula
Usable locations − occupied locations; target headroom = usable × target occupancy − occupied
How to use the result
The target percentage is an input for your scenario, not a recommended universal maximum. Operations differ substantially.
What this calculator does not validate
It does not validate structural rack capacity, floor loading, safe material-handling clearances, fire protection, sprinkler requirements, exits, accessibility, equipment suitability or legal compliance. Use it for early planning and scenario comparison only.
Facility-specific decisions: confirm final dimensions and requirements with the applicable manufacturers, competent professionals and authorities in your jurisdiction.