magnetrechner.de

What It Is

magnetrechner.de is a free online magnet calculator provided by Magnetfabrik Bonn GmbH. It is not a software development SDK or API platform in the traditional sense, but rather a web-based tool for magnet applications and engineering calculations, used to estimate magnetic fields and magnetic dipole moments for different shapes and magnetization methods.

Core Capabilities

Based on the scraped content, the tool offers two main types of calculations. One is “magnetic field on the axis,” which calculates the magnetic field B based on the distance s from the magnet surface and also provides the magnetic dipole moment. The other is “magnetic field at any point in space,” which calculates the Bx, By, and Bz components using coordinates referenced to the center of the magnet, and calculates M = J × V. Supported magnet shapes include spheres, cuboids, discs, rings, and multipole plates, while magnetization methods include axial, diametrical, radial, and others. For hardware engineers, sensor application specialists, or users selecting magnets, this level of coverage is practically useful.

Pricing and Integrability

The page clearly describes it as a “kostenloser Service,” meaning a free service. No paid plans, account system, payment methods, or commercial licensing information were found. From a developer-tool perspective, information about APIs/SDKs, batch calculations, export, self-hosting, and open source availability is not disclosed. As a result, it is better suited as a browser-based auxiliary calculator than as a tool that can be embedded into an R&D workflow.

Pros and Cons

Its advantages are that it is free, clearly categorized, covers common permanent magnet shapes and magnetization directions, and can handle three-axis magnetic field components at arbitrary points in space, making it suitable for early-stage estimation. Its drawbacks are limited documentation: the scraped text does not show formula explanations, error ranges, material parameter settings, example tutorials, or developer interfaces. In addition, the page repeatedly displays “Domain noch nicht zugewiesen / in Zuweisung,” which may indicate issues with site deployment or domain configuration, affecting credibility and the access experience.

Who It’s For and Access from China

It is suitable for magnet selection, electromechanical design, estimating sensor installation distances, teaching demonstrations, and quick calculations during the prototyping stage. It is not suitable for teams that require programmatic access, large-scale simulation, versioned calculation records, or internal enterprise self-hosting. Access from China cannot be determined from the scraped text and is marked as unknown.