Magnetic flux density (B-field) is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. It is measured in Tesla (T) in the SI system and Gauss (G) in the CGS system. One Tesla equals 10,000 Gauss. The B-field is related to the magnetic field strength (H-field) by the equation: B = μ₀(H + M), where μ₀ is the permeability of free space and M is the magnetization.
Magnetic Flux Density Converter
Convert between Tesla, Gauss, Weber/m², Maxwell/cm² and other magnetic flux density units with scientific precision.
Conversion Formula
1 Tesla = 10,000 Gauss
Common Conversions
Quick reference table| From | To | Result |
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About Magnetic Flux Density
Magnetic flux density (also called magnetic induction or B-field) is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. It is one of the two fundamental magnetic field quantities, the other being magnetic field strength (H-field).
The SI unit of magnetic flux density is the Tesla (T), named after Nikola Tesla. One Tesla is defined as one Weber per square meter (Wb/m²). In the CGS system, the unit is the Gauss (G), where 1 Tesla = 10,000 Gauss.
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SI Unit: Tesla (T) 1 T = 1 Wb/m² = 10,000 Gauss = 10 Gauss
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CGS Unit: Gauss (G) 1 G = 10⁴ T = 10⁻⁴ Wb/m²
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Earth's Magnetic Field ~25 to 65 microtesla (0.25 to 0.65 Gauss)
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MRI Machines 1.5 to 7 Tesla (15,000 to 70,000 Gauss)
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Neutron Stars 10⁸ to 10¹¹ Tesla (extremely strong)
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Relationship to H-field B = μ₀(H + M), where μ₀ is permeability of free space
How to Use This Converter
Our magnetic flux density converter is engineered for speed, precision, and ease of use. Follow these steps to get accurate conversions instantly.
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Select Source Unit Choose the magnetic flux density unit you want to convert from (Tesla, Gauss, Weber/m², etc.)
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Select Target Unit Pick the unit you want to convert to from the second dropdown.
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Enter Value Type your magnetic flux density value — the result appears instantly as you type.
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Swap Units Click the swap button to quickly reverse the conversion direction.
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View Formula The exact conversion formula is displayed below for verification and learning.
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Reference Table Use the common conversions table for quick lookups of standard values.
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Built with precision engineering and premium design, our converter meets the demands of physicists, engineers, and researchers worldwide.
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Applications of Magnetic Flux Density
Magnetic flux density measurements are critical across numerous scientific and engineering disciplines. Here are key applications:
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Medical Imaging (MRI) MRI machines use 1.5 to 7 Tesla magnetic fields for detailed internal imaging.
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Particle Accelerators CERN's LHC uses 8.3 Tesla superconducting magnets to guide particle beams.
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Electric Motors & Generators Design and optimization of electromagnetic machines requires precise B-field calculations.
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Transformers Power transformers operate at specific flux densities for optimal efficiency.
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Magnetic Storage Hard drives and magnetic tape use precise flux densities for data storage.
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Geophysics Earth's magnetic field (25-65 μT) is measured for navigation and geological surveys.
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Astrophysics Neutron stars and magnetars have fields up to 10¹¹ Tesla — the strongest known.
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Materials Science Characterizing magnetic properties of materials requires precise B-field measurements.
Frequently Asked Questions
To convert Tesla to Gauss, multiply the value in Tesla by 10,000. For example:
- 1 Tesla = 10,000 Gauss
- 0.5 Tesla = 5,000 Gauss
- 2 Tesla = 20,000 Gauss
- 0.001 Tesla = 10 Gauss
The SI unit of magnetic flux density is the Tesla (T), named after Nikola Tesla (1856-1943). One Tesla is defined as:
- 1 T = 1 Wb/m² (Weber per square meter)
- 1 T = 10⁴ Gauss
- 1 T = 10⁴ Mx/cm² (Maxwell per square centimeter)
- 1 T = 1 kg/(A·s²)
Magnetic flux (Φ) is the total magnetic field passing through a given area, measured in Webers (Wb). Magnetic flux density (B) is the magnetic flux per unit area, measured in Tesla (T) or Wb/m².
The relationship is: Φ = B × A, where A is the area perpendicular to the magnetic field.
Analogy: Think of magnetic flux as the total amount of water flowing through a pipe, while magnetic flux density is how concentrated that water flow is per unit area of the pipe.
The relationship is: Φ = B × A, where A is the area perpendicular to the magnetic field.
Analogy: Think of magnetic flux as the total amount of water flowing through a pipe, while magnetic flux density is how concentrated that water flow is per unit area of the pipe.
Yes, the ASLI FORM Magnetic Flux Density Converter is 100% free forever. There are no registration requirements, no usage limits, no subscription fees, and no hidden charges. We do not display advertisements and we do not collect any personal data. Our mission is to provide a premium tool that researchers, engineers, and students can use without barriers.
Our converter delivers results accurate to 10 significant digits using conversion factors from official metrology institutes including NIST, BIPM, and the International Bureau of Weights and Measures. This level of precision is suitable for engineering calculations, scientific research, academic work, and professional applications.
Yes. Once the page loads, all calculations happen locally in your browser. There is no server-side processing, no API calls, and no internet dependency for conversions. This makes the tool perfect for laboratory work, field research, remote locations, and anywhere connectivity is limited or unavailable.
The Earth's magnetic flux density varies by location:
- Equator: ~25 to 30 microtesla (0.25 to 0.30 Gauss)
- Mid-latitudes: ~40 to 50 microtesla (0.40 to 0.50 Gauss)
- Poles: ~60 to 65 microtesla (0.60 to 0.65 Gauss)
The strongest sustained magnetic fields created by humans are:
- MRI machines: 1.5 to 7 Tesla (clinical), up to 11.7 Tesla (research)
- NMR spectrometers: Up to 28 Tesla (research)
- Pulsed magnets: Up to 100 Tesla (brief pulses)
- Explosive flux compression: Up to 1,200 Tesla (microseconds)
Absolutely. Our converter is designed with a mobile-first responsive approach and works perfectly on every device — from basic keypad phones to 4K desktop displays. The interface adapts intelligently: desktops get a sidebar, tablets get a collapsible sidebar, and mobile devices get optimized dropdowns. Touch interactions, scroll snapping, and momentum scrolling are all optimized for mobile.
Several key features set us apart:
- Premium design with sidebar navigation and fluid animations
- Real-time conversion — no submit button needed
- Formula explanations for educational value
- Common conversions table for quick reference
- Offline capability for lab and field work
- Zero tracking — complete privacy for research data
- Universal compatibility across all devices and operating systems
No. We do not collect, store, or transmit any of the values you enter. All calculations happen entirely in your browser's memory and are destroyed the moment you close the tab. We use no analytics scripts, no cookies for tracking, and no third-party services that could see your conversions. Your research data and privacy are absolute and non-negotiable.
The relationship between magnetic flux density (B) and magnetic field strength (H) is:
B = μ₀(H + M)
Where:
B = μ₀(H + M)
Where:
- B = Magnetic flux density (Tesla)
- H = Magnetic field strength (A/m)
- M = Magnetization (A/m)
- μ₀ = Permeability of free space = 4π × 10⁻⁷ H/m
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