Our Magnet Pull Force Calculator, also known as a magnetic strength calculator or magnet force calculator, is built for engineers, product developers, and researchers who need quick, accurate starting data for magnet selection. By entering your magnet’s dimensions, shape, and grade, you can estimate its pull force and compare performance across different designs. Whether you’re prototyping, testing, or sourcing magnets for production, this tool helps you narrow down the right options before ordering.

Important information to know as you start calculating below: Magnetic calculators use approximation formulas. These formulas become less accurate as magnet sizes decrease. Please use with caution, especially with smaller magnets.

For questions or requests involving custom magnets or assemblies, please visit our SM Magnetics website or go directly to our Custom Magnet Request Page, where you can upload your print.