Professional magnetic unit converter for physics, engineering, and electronics. Convert Tesla, Gauss, Oersted, Weber, Henry and more magnetic units.
SI unit for magnetic flux density. 1 T = 1 Wb/m² = 10,000 Gauss. Used in MRI, scientific applications.
CGS unit for magnetic flux density. 1 G = 10⁻⁴ T. Common in permanent magnets and low-field applications.
SI unit for magnetic flux. 1 Wb = 1 T⋅m². Represents total magnetic field through a surface.
SI unit for inductance. 1 H = 1 Wb/A. Measures ability to store magnetic energy in coils.
| Source | Field Strength (Tesla) | Field Strength (Gauss) | Application/Notes |
|---|---|---|---|
| Human brain (neurons) | 10⁻¹⁵ T | 10⁻¹¹ G | Biomagnetism detection |
| Urban magnetic noise | 10⁻⁹ T | 10⁻⁵ G | Electromagnetic interference |
| Earth's magnetic field | 5×10⁻⁵ T | 0.5 G | Navigation, compass |
| Refrigerator magnet | 5×10⁻³ T | 50 G | Ferrite permanent magnet |
| Loudspeaker magnet | 0.1-1 T | 1,000-10,000 G | Audio transducers |
| MRI scanner | 1.5-7 T | 15,000-70,000 G | Medical imaging |
| Superconducting magnet | 10-45 T | 100,000-450,000 G | Research applications |
Relationship between magnetic flux density B and field strength H through permeability μ.
Magnetization M depends on susceptibility χ and applied field H.
Internal field Hᵢ depends on external field H, demagnetization factor N, and magnetization M.
Temperature dependence of susceptibility near Curie temperature Tc.
| Technology | Magnetic Field | Key Parameters | Applications |
|---|---|---|---|
| Compass navigation | 25-65 μT | Earth's field detection | Navigation, orientation |
| Credit card strips | ~300 Oe | Coercivity 300 Oe | Data storage |
| Loudspeakers | 0.1-1 T | Force on voice coil | Audio reproduction |
| MRI contrast agents | 1.5-7 T | T1, T2 relaxation | Medical imaging |
| Magnetic levitation | 0.1-1 T | Repulsive/attractive force | Transportation, bearings |
| Fusion plasma | 5-20 T | Particle confinement | Nuclear fusion research |