How does the magnetic field near a small ceramic magnet compare with Earth’s magnetic field?

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Diagram showing a circular loop of wire with an electric current, surrounded by curved blue lines representing magnetic field lines that loop around the wire and pass through its center. — magnetism Some lines of the magnetic field B (blue) for an electric current I (gold) in a loop.

The magnetic field near a small ceramic magnet is significantly stronger than Earth’s magnetic field.

In physics, magnetic fields are measured in tesla (T). The magnetic field near a small ceramic magnet is approximately 0.1 T, whereas Earth’s magnetic field at the Equator is approximately $4 \times 10^{- 5}$ T.1

This comparison highlights the vast difference in field strength between common permanent magnets and the geomagnetic field generated by the planet. While Earth's field is sufficient to influence a compass needle, the field produced by a small ceramic magnet is several orders of magnitude more intense.21