Parking spaces per 1,000 sq ft — and per unit — for any building.
Result
How to use this tool
All counted spaces on the chosen basis.
In square feet, gross or leasable — note which.
For the per-unit ratio in Advanced options.
See how many spaces your target ratio would require.
Formula & worked example
150 spaces for a 50,000 sq ft building gives 150 ÷ 50 = 3.0 spaces per 1,000 sq ft. For 100 units, that is also 1.5 spaces per unit.
Limitations — read this before you rely on it
A measurement tool, not a compliance check: zoning minimums/maximums, accessible-space rules, bicycle parking and local definitions vary and are not modelled here.
Frequently asked questions
The number of parking spaces relative to building size — conventionally spaces per 1,000 square feet of floor area — or per residential unit.
Offices often sit around 3–4 per 1,000 sq ft, retail higher (4–5+), residential is usually quoted per unit (1–2). Local norms and transit access shift these a lot.
Yes — most jurisdictions set minimum (and sometimes maximum) parking requirements by use type. This calculator measures a ratio; it does not check your local code.
Count consistently: decide whether visitor, accessible and loading spaces are included, and use the same basis when comparing buildings.
State which you used — gross building area and rentable/leasable area give different ratios. Comparisons only work on the same basis.