# Solenoid Coil Electromagnetic Force Calculator

Calculate the force between a solenoid coil and another piece of ferromagnetic material using this calculator. Enter the values of current, area, number of turns and length of coil to find the result.
**Note**
The magnetic field of solenoid is usually uniform along the axis and weak outside the coil

## Solenoid Coil Electromagnetic Force Calculation

Code to add this calci to your website

#### Formula:

F = (n x i)^{2} x magnetic constant x a / (2 x g^{2})
Where,
F = Force,
i = Current,
g = Length of the gap between the solenoid and a piece of metal,
a = Area
n = Number of turns,
Magnetic constant = 4 x PI x 10^{-7}.
*Solenoid Coil Electromagnetic Force* calculation is made easier here.