Door Swing Clearance Calculator
Calculate the floor area swept by a door and the minimum clearance space required based on door width and swing angle.
Formulas Used
Swept Area (Annular Sector):
A = (θ / 2) × (Router² − Rinner²)
where Router = door width, Rinner = door thickness, θ = swing angle in radians.
Arc Length (outer edge):
L = Router × θ
Chord Length:
C = 2 × Router × sin(θ / 2)
Clearance Bounding Box (θ ≤ 90°):
Width = Router × sin(θ)
Depth = Router × (1 − cos(θ))
Clearance Bounding Box (90° < θ ≤ 180°):
Width = Router
Depth = Router × (1 − cos(θ))