BOMA-standard SF conversion
Convert between usable and rentable square footage, calculate load factors, and compare building efficiency using BOMA measurement standards.
Runs locally · Nothing is saved or sent to a server
Usable vs. rentable is a common source of confusion
The gap between usable and rentable square footage directly impacts total rent obligation. A clean calculator that explains the math helps both sides of the table.
A common source of confusion
The difference between usable and rentable square footage is one of the most common points of confusion in office leasing for both tenants and brokers.
Load factors vary widely
Load factors range from 10% to 25%+ depending on building class, floor plate, and common area configurations. Tenants need to compare apples to apples.
Impacts total rent obligation
A tenant paying $50/RSF in a building with a 20% load factor is paying $60 per usable square foot. This difference matters in deal economics.
What you can calculate
Usable-to-rentable conversion
Convert between usable and rentable square footage by applying the building's load factor.
Load factor calculation
Calculate load factor (or loss factor) from usable and rentable square footage measurements.
Floor vs. building comparison
Compare floor-by-floor load factors against the building-wide average to evaluate space efficiency.
BOMA-standard methodology
Calculations follow BOMA (Building Owners and Managers Association) measurement standards.
Multi-floor analysis
Analyze square footage across multiple floors simultaneously for multi-floor tenants.
Rent impact comparison
See how different load factors affect per-square-foot rent on a usable versus rentable basis.
At your service
Square footage, defined precisely
LeasePilot generates premises descriptions with accurate BOMA-standard square footage references built into every lease.