Parking Lot Space Calculator

Formulas Used

Projected stall width along row (angled):
Effective Stall Width = Stall Width / sin(θ)

Projected stall depth perpendicular to row (angled):
Effective Stall Depth = Stall Depth × sin(θ) + Stall Width × cos(θ)

Module depth (two back-to-back rows + one drive aisle):
Module Depth = 2 × Effective Stall Depth + Aisle Width

Total rows:
Rows = (floor(Lot Width / Module Depth) × 2) + extra single row if space permits

Stalls per row:
Stalls per Row = floor(Lot Length / Effective Stall Width)

Adjusted spaces:
Spaces = floor(Total Rows × Stalls per Row × Efficiency Factor)

Parallel parking (0°): Stall depth runs along lot length; stall width runs along lot width.