Magnetic Flux Density Calculator (B Field) Formula

Magnetic flux density (B), also called magnetic induction, measures the strength and density of a magnetic field. It represents the amount of magnetic field lines passing through a unit area perpendicular to the field. It is vector quantity symbolized by B and is measured in Teslas (T).

Magnetic flux density Calculator

Inputs Clear Input

Magnetic field (H) in A/m (input1) :

Outputs Calculate

Magnetic Flux Density (B) in mT (output1) :

EXAMPLE:

INPUTS:

• H = 400 A/m

OUTPUT:

• B = 0.503 mT

Magnetic flux density Formula

B is related to magnetic field strength (H) by B = μH, where μ is the material’s permeability, or calculated as B = Φ/A (magnetic flux/area).

• 1 Tesla = 1 Weber per square meter (Wb/m²).

Summary: Crucial for understanding magnetic forces on charges and currents ( e.g. Hall effect ) and designing electrical devices like motors, transformers and generators.
The magnetic flux density calculator ensures accurate results and helps students strengthen their understanding of magnetic field behavior.