How to use the magnetic flux calculator
Find the magnetic flux through a loop from the field strength, area and angle. Enter magnetic field, loop area, angle between field and loop normal in the fields above; the magnetic flux are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “magnetic flux through coil”, “flux formula”, “field through area”, “calculate magnetic flux”, “find magnetic flux”.
Formula
Variables
- B — Magnetic field (T)
- A — Loop area (m²)
- th — Angle between field and loop normal (°)
Worked example
With magnetic field = 0.5 T, loop area = 0.02 m², angle between field and loop normal = 0 °, the calculator gives magnetic flux ≈ 0.01 Wb; magnetic flux ≈ 10 mWb.
Frequently asked questions
What is the magnetic flux calculator used for?
Find the magnetic flux through a loop from the field strength, area and angle. It helps with questions such as “magnetic flux through coil”, “flux formula”, “field through area”.
What is the formula for the magnetic flux calculation?
Magnetic flux (Wb) = B × A × cos(th). Magnetic flux (mWb) = [Magnetic flux] × 1000. Here B is magnetic field (T), A is loop area (m²), th is angle between field and loop normal (°).
What inputs do I need for the magnetic flux calculator?
You need magnetic field in T, loop area in m², angle between field and loop normal in °. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the magnetic flux calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the magnetic flux result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.