The K&J Magnetic Field Calculator

Pull Force

Repelling

Magnetic Field

Thickness

Gap

Units

Only one shape currently available:

Discs/Cylinders

Grade:

Select N35 N38 N40 N42 N45 N48 N50 N52

Diameter:

in mm

Thickness:

in mm

Measurement Position:

X:

in mm

Y:

in mm

(If unsure, leave blank.)

The K&J Magnetic Field Calculator calculates the magnetic field strength in Gauss near a disc or cylinder shaped neodymium magnet. Enter the size of the magnet and a position to measure the field strength.

All data is provided in gauss. (1 tesla = 10,000 gauss)

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* Note that the Measurement Position assumes the zero position (0,0) is at the center of the magnet, inside the magnet.

Click here to go to our Original Magnet Calculator that shows Pull Force and more.

All data presented in this calculator is derived from a series of finite element analysis studies for a single magnet in free space.  While we have verified the accuracy of results with our own experimental measurements, be sure to verify with your own measurements in your particular application.  Other nearby magnets or ferromagnetic materials can dramatically alter your results.

All dimensions and positions must be in decimal format. Fractional inches will not calculate correctly.

This calculator only considers discs and cylinders that are magnetized along the cylindrical axis. While K&J Magnetics offers diametrically magnetized magnets, this calculator does not apply to them.

NOTE:
This calculator is currently a beta version and is intended only for reference. K&J Magnetics, Inc. will not be held liable for its use. All calculations are approximations and should not be used as the sole source of design data. The factors of your application may change these values considerably. Be sure to test magnets in your configuration.

Please report any troubles, concerns or suggestions about this calculator to: contactus@kjmagnetics.com.