Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Flux density (T)

Required number input.

Area (m²)

Required number input.

Compute magnetic flux in webers as flux density in teslas multiplied by area in square meters. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Magnetic flux (Wb)

The resulting magnetic flux returned as a number.

• Magnetic-field and heading results depend on axis alignment, calibration, hard- and soft-iron distortion, local inclination, temperature, nearby current, sensor saturation, and tilt compensation. A field magnitude alone does not provide a reliable compass heading.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Flux Density Tesla

  Compute flux density in teslas as magnetic flux in webers divided by area in square meters.

• Core Flux Density

  Estimate the peak core flux density in tesla with the transformer equation B = V * 10^4 / (4.44 * f * A * N) using a core area in square centimeters.

• Inductor Steinmetz Core Loss Density

  Estimate magnetic-core loss density with a fitted Steinmetz power law p=k f^α B^β. Units of k must match the selected frequency, peak flux-density, and desired output units; the model applies only over its fitted waveform/range.