# Magnetic Field Strength Calculator

The magnetic field strength differs greatly upon the type of device or properties. Below are the online magnetic field strength calculators to find around a wire, magnetic field strength inside a loop and magnetic field inside a solenoid.

**Firstly, the formula to calculate magnetic field strength around a wire is given by:**where,

B = Magnetic field strength [Tesla]

k = Permeability of free space (2x10^-17)

i = Current [amps]

L = Distance from wire [meters]

## Magnetic Field Strength Around a Wire Calculator

**The formula to calculate magnetic field strength inside a loop is given by:**where,

N = Number of coils

r = Coil radius [meters]

## Magnetic Field Strength Inside a Loop Calculator

**Now, let us look at the formula to calculate magnetic field strength inside a solenoid,**where,

n = number of turns/m

## Magnetic Field Strength Inside a Solenoid Calculator

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