Magnetic Field Calculator

This tool calculates magnetic field strength measured in gauss, on the centerline of a disc magnet or ring magnet magnetized through its thickness, at a distance of X from the surface of the magnet.

Fill in all of the blank calculation fields, click the calculate button and the results will appear. The necessary geometrical inputs are illustrated in the diagram. Units of measure may be inches or mm, but must be consistent.

While we make every effort to make certain that the calculations generated by this tool are complete and accurate, we make no warranty regarding this. We would appreciate your input regarding corrections, additions and suggestions for improvement. Please send suggestions or requests for more specific assistance to info@adamsmagnetic.com

Disk/Ring Magnet

Rectangle Magnet

Calculate Gauss and Pull

Demagnetization Curves

A second quadrant demagnetization curve provides information about the magnetic characteristics of a magnet, including the magnetic field strength and how resistant it is to demagnetize. How it is used in a magnetic circuit will affect its performance. When a permanent magnet is fully magnetized, its magnetic domains are aligned. Certain conditions such as temperature and reverse magnetic fields can cause some of the domains to lose this alignment and reverse, triggering the magnet to lose some or all of its magnetic field.

Magnetization & Measurement

Magnetization is a fundamental property of permanent magnets, determining their strength and ability to interact with other magnetic materials. Understanding and measuring this property is crucial in various applications, from designing motors and sensors to evaluating magnet performance and quality.