This Parking Garage Calculator estimates parking capacity and construction costs for multi-level structures. Enter your garage dimensions and number of above/below-ground floors, and it calculates stalls using 310 sq ft per space (including driving lanes). Cost estimates are $20k per stall for ground level, $30k for above-ground, and $40k for below-ground floors. Results show a ±15% range to account for variations, but these are preliminary construction estimates only—consult professionals for accurate project pricing as costs don’t include land, permits, or design fees.