Point to Line Projection Calculator (3D)

The projection of a point P onto a line is the point Q on the line that is closest to P. The line segment PQ is perpendicular to the line.

Method: If the line is given by A + t·d⃗, we find t by projecting the vector AP⃗ onto the direction vector d⃗.

Applications: Computer graphics, physics simulations, shortest distance calculations, collision detection.