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Details

Magnet Pull Force Calculator

Calculate magnet strength and find related products

Diameter:
Distance:






Our Repelling Force Magnet Calculator shows the repelling force generated between two same-sized magnets.

Many online calculators we've seen determine pull force based on a theoretical calculation of the flux density. With a few assumptions, flux density (in Gauss) can be related to the expected pull force. Unfortunately, this simplification often fails to match experimentally measured data.

This page calculates expected pull forces based on extensive product testing. The Surface Field data is only valid for points along the center axis of the magnet, and assumes a single magnet in free space.

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

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

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.

May
Specials


DA4-neodymium-disc-magnet
10% Off
DA4
5/8" dia x 1/4" thick

R424-neodymium-ring-magnet
10% Off
R424
1/4" OD x 1/8" ID x 1/4" thick ring

MBH-2-neodymium-nametag-holder-magnet
10% Off
MBH-2
Magnetic badge holder and name tag

BX066-neodymium-block-magnet
10% Off
BX066
1" x 3/8" x 3/8" block, 22 lb pull force


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K&J Magnetics, Inc.
Your online source for incredibly powerful neodymium magnets.