Magnetic Force Calculator

Effortlessly calculate magnetic forces and optimise your magnetic solutions for enhanced performance and efficiency.

Calculating Magnetic Force

Calculating the accurate magnetic force between magnet and magnet or between magnet and steel plate requires professionalism, extensive experience, and advanced simulation software. However, we’ve created a simplistic way for you to calculate an estimation of magnetic force. Before using the calculator, please see below considerations:

Magnetisation in direction of height H
The equations are based on fits on both FEM and otherwise obtained force data, and take uncertainties on both these data into account
The largest uncertainty is in the measured data fits. Measured data here means pull/holding force data as found within published online literature
The force is an estimate / approximation. No liability for deviations with measured forces

Please select shape

Discs/Cylinders Blocks Rings

The force calculator can be used for both the computation of the holding/pull force between two identical magnets, and for the computation of the holding/pull force between a magnet and a magnetically non-saturated (hence, sufficiently thick) steel plate. Also, we have only considered the situation of zero distance between magnet and magnet or, equivalently, between magnet and steel plate. Non-zero air gaps are not considered. Note that for zero distance, the force between a magnet and a steel plate is the same as the force between two identical magnets (NOT for non-zero distance, in which case the force between a magnet and a steel plate is smaller than the force between two identical magnets)”.

Material*

Br (T)*

W (mm)*

L (mm)*

H (mm)*

D (mm)*

D0 (mm)*

Di (mm)*

*Required field.