point-to-point distance online Calculator

Straight line: X +  Y = 
point :  , 

The length of the segment of a vertical line from a point outside a line to this line is called the distance from the point to the line.

Set the Equation of the line L to be Ax+By+C=0, and the coordinates of the point P to be (Xo, Yo), then the distance from the point P to the line L is: d=│AXo+BYo+C│ / √(A²+B²)。