Calculate the Length of a Spiral (Coil)

The following equation is used to calculate the length of the spiral:

Length = sqrt(   (   (pi * Diameter * # of turns)^2 + (Pitch * # of turns)^2)   )   )

Enter Spiral (Coil) Info Below:

Units are set at millimeters, the result will be in mm AND inches.
Units used:    

Outside Diameter of the Spiral:    

# of Turns of the Spiral:    

Pitch* of the Spiral:    

* Pitch is the distance between turns or loops