Magnet measurement is the process of verifying a magnet's magnetic field value, pull force, or operating performance. The most common methods include:

• Gauss measurement (magnetic flux density)
• Pull force testing
• Magnetic field direction verification
• Surface area and pole inspection
• Field effect at working distance

Gauss measurement is the process of measuring the magnetic field value at the surface of a magnet using a Gaussmeter and Hall probe. The measurement point is critical:

• The surface center and edge give different Gauss readings
• The value drops rapidly as you move a few mm away from the surface
• Coatings, plastic housings, or air gaps affect the reading

It is the magnetic flux density measured at the surface of the magnet. It is directly related to material grade, geometry, and magnetization direction. However, a high Gauss value does not always mean higher pull force — pull force also depends on surface area, thickness, and air gap.

No. Gauss value indicates magnetic flux density, while pull force refers to how strongly a magnet holds onto a metal surface. Key factors affecting pull force include: magnet size and grade, thickness of the metal surface, surface roughness, air gap, and pull direction.

First select the magnet type: disc, ring, or block. Then enter the dimensions and select the material grade (Neodymium, Ferrite, Alnico, SmCo). The result shows the approximate surface Gauss value and theoretical magnetic field information.

Material grade (N35–N52), diameter or surface area, thickness, magnetization direction, measurement distance, and temperature rating are the key factors. In particular, the thickness-to-diameter ratio has a critical effect on surface flux density.

We offer on-site magnet measurement services using a professionally calibrated Gaussmeter to verify the actual field strength of magnets used in your facility.

Whether you need to confirm that supplied magnets meet their rated specifications, check whether production magnets have lost strength over time, or perform quality control on new purchases — we can help.

To learn more or schedule a measurement, fill in the quote request form or contact us directly.