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Parking Lot Calculator | General Asphalt

Parking Lot Calculator

Estimate the maximum number of parking spaces that fit in your lot, with proper drive aisle clearance.

90°
60°
45°

Result

🅿️ Layout Reference

How it works

This calculator stacks "modules" of two facing stall rows plus a drive aisle to fill the width of your lot, and fits as many stalls as possible along the length of each row based on stall spacing for the selected angle.

Angle Stall Depth Aisle Width
90° (perpendicular)18 ft24 ft (two-way)
60° (angled)19.5 ft18 ft (one-way)
45° (angled)17.5 ft13 ft (one-way)

Note: these are general planning reference figures, not engineered specifications. Actual layouts must account for ADA-accessible spaces, fire lanes, drainage, landscaping, local code requirements, and site-specific constraints. Always have a final layout reviewed by a civil engineer or architect before construction.

Disclaimer: The results and diagram generated by this calculator are approximate, conceptual estimates based on general planning reference dimensions and the values entered by the user. They are not engineered drawings and do not account for ADA accessibility requirements, fire lane access, drainage, curb cuts, landscaping, local zoning or building codes, or other site-specific constraints. This tool is provided solely for preliminary planning purposes and should not be used as the sole basis for design, permitting, budgeting, or construction decisions. General Asphalt Co., LLC assumes no liability for any discrepancies, losses, or damages arising from the use of this calculator. For an accurate site plan, please consult a licensed civil engineer or architect and contact our team.