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Field on Axis of a Cylindrical Magnet



Calculates the field strength on the axis of an axially magnetized cylindrical magnet.

Fill in all of the black-outlined boxes, and the results will appear in the light-gray boxes. Units may be selected as either CGS (Gauss, in.) or SI (mTesla, mm). The required geometrical inputs are defined in the diagram.

This calculation works best with magnetic materials displaying "straight line" demagnetization curves.
Unit System
Radius [inches]
Length [inches]
Residual induction (Br) [G]
Distance from pole face [inches]
Material type
Results
Field (B) [G]

The above calculation is for reference only and Dexter Magnetic Technologies Inc. will not be held liable for its use. Please contact us for specific assistance should you require it.