The Magnetic Flux Calculator computes the total magnetic field passing through a given surface area. It uses the equation Φ = B × A × cos(θ), where B is the magnetic field strength (in Tesla), A is the area (in square meters), and θ is the angle between the magnetic field and the perpendicular (normal) to the surface. Magnetic flux, measured in Webers (Wb), represents the amount of magnetic influence across a surface and is essential in electromagnetism and Faraday’s law of induction.