Magnetic Field Converter
Convert between tesla, gauss, and other magnetic field units
Magnetic Field Converter
Conversion Formula:
Multiply by 10000
Similar to:
Standard MRI machine (1.5 T) or laboratory electromagnet
Common Magnetic Field Values
Common Magnetic Field Values
| Source | Typical Value | Category |
|---|---|---|
| Earth's Magnetic Field (Surface) | 25-65 μT (0.25-0.65 G) | Natural |
| Refrigerator Magnet | 5-10 mT (50-100 G) | Permanent Magnet |
| Magnetic Resonance Imaging (MRI) | 1.5-7 T (15,000-70,000 G) | Medical Equipment |
| Strong Neodymium Magnet | 0.2-1.2 T (2,000-12,000 G) | Permanent Magnet |
| Typical Smartphone Speaker | 0.1-0.5 T (1,000-5,000 G) | Electronics |
| Household Appliances (at source) | 0.1-10 μT (0.001-0.1 G) | Electronics |
| High-Voltage Power Lines (nearby) | 0.1-3 μT (0.001-0.03 G) | Infrastructure |
| Laboratory Electromagnet | 1-2 T (10,000-20,000 G) | Research |
| Particle Accelerator Magnets | 2-8 T (20,000-80,000 G) | Research |
| Interplanetary Magnetic Field | 1-10 nT (0.00001-0.0001 G) | Space |
| Neutron Star Surface (estimated) | 10⁸-10¹⁵ T (10¹²-10¹⁹ G) | Astronomical |
Understanding Magnetic Fields
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. The magnetic field at any point is specified by both a direction and a magnitude.
Key Concepts:
- Magnetic Flux Density (B): Measured in Tesla (SI) or Gauss (CGS), represents the amount of magnetic flux per unit area
- Magnetic Field Strength (H): Measured in amperes per meter (SI) or oersted (CGS), represents the "magnetizing field"
- Relationship: B = μH, where μ is the permeability of the medium
- Permanent Magnets: Create persistent magnetic fields without electricity
- Electromagnets: Generate magnetic fields from electric current
Applications:
- Electromagnetism: Motors, generators, transformers
- Medicine: MRI imaging, magnetotherapy
- Navigation: Compasses, aviation, marine navigation
- Storage: Hard drives, magnetic tapes
- Research: Particle accelerators, fusion reactors
- Transportation: Maglev trains, magnetic bearings
Magnetic Field Units:
There are two major systems of magnetic field units: SI (International System) and CGS (Centimeter-Gram-Second).
SI Units:
- • Tesla (T): The SI unit of magnetic flux density (B)
- • Weber per square meter (Wb/m²): Equivalent to tesla
- • Ampere per meter (A/m): The SI unit of magnetic field strength (H)
CGS Units:
- • Gauss (G): CGS unit of magnetic flux density (1 G = 0.0001 T)
- • Oersted (Oe): CGS unit of magnetic field strength
In vacuum or air, 1 Gauss ≈ 1 Oersted, but in other materials, they differ based on magnetic permeability.
Was this converter helpful? Let us know how we can improve it!
☕ Support UnitGenie
If this tool has been helpful, consider buying me a coffee to support development and keep it free for everyone!
Magnetic Field Visualization
Magnetic Field Visualization
Relative Strength Comparison:
Typical Field Source:
Field Intensity Representation:
Safety & Effects:
Occupational safety limits, no permanent biological effects, may affect sensitive equipment
Common Examples:
MRI machines, laboratory electromagnets
Basic Formulas:
B = μ₀H (Flux Density = Permeability × Field Strength)
B = F/(I·L) (Flux Density from Force on Current)
F = qv×B (Lorentz Force on Moving Charge)
B = μ₀I/(2πr) (Field from Straight Wire)
Note: B is flux density (Tesla), H is field strength (A/m), μ₀ is vacuum permeability (4π×10⁻⁷ H/m)
Conversion: 1 Tesla (T) = 10,000 Gauss (G)
Magnetic Field Formulas
Flux Density to Field Strength:
H = B/μ
Where μ is the magnetic permeability of the medium (for vacuum, μ₀ = 4π × 10⁻⁷ H/m)
Lorentz Force:
F = qv×B
Force on a moving charge (q) with velocity (v) in a magnetic field (B)
Field from Straight Wire:
B = μ₀I/(2πr)
Where I is current and r is distance from wire
Field in Solenoid:
B = μ₀nI
Where n is number of turns per unit length
Unit Conversions:
1 Tesla = 10,000 Gauss
1 A/m ≈ 0.01257 Gauss (in vacuum)
1 Oersted ≈ 79.577 A/m
Magnetic Field Safety
Guidelines for different exposure levels:
- 0-0.5 mT (0-5 G): Safe for general public, including sensitive medical devices
- 0.5-3 mT (5-30 G): Potential issues with pacemakers and implanted medical devices
- 3-500 mT (30-5000 G): Occupational limits; potential hazard for ferromagnetic objects
- 0.5-2 T (5000-20000 G): MRI range; restricted access; strong forces on ferromagnetic objects
- 2+ T (20000+ G): Research-level fields; strictly controlled access
Note: These are general guidelines. Always follow specific safety protocols for your environment.
Mobile tip: Swipe left or right on the unit dropdown to quickly change units, or use the arrow buttons
About the Magnetic Field Converter
Convert between tesla, gauss, and other magnetic field units All conversions run instantly in your browser and nothing you enter is sent to a server.
Common Conversion Formulas
| From | To | Formula |
|---|---|---|
| Tesla (T) | Gauss (G) | G = T × 10,000 |
| Tesla (T) | Weber per square meter (Wb/m²) | Wb/m² = T |
| Magnetic field (B) | Magnetic force (F), Current (I), Length (L) | F = I × L × B (Lorentz Force) |