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Magnetism & Thermal Physics Tools — Magnetic Flux, Flux Density, Heat Transfer | ASLI FORM

Magnetic Flux Converter

Convert between Weber, Maxwell, Volt-Seconds, and other magnetic flux units used in physics and engineering worldwide.

Conversion Formula
1 Weber = 10 Maxwell

Common Conversions

Quick reference table
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About These Physics Tools

Our Magnetism & Thermal Physics Tools are designed for scientists, engineers, students, and researchers who need precise unit conversions for magnetic and thermal measurements. All conversion factors are based on internationally-recognized standards from NIST, BIPM, and ISO.

  • Magnetic Flux (Φ) Total magnetic field passing through a surface. SI unit: Weber (Wb). CGS unit: Maxwell (Mx). 1 Wb = 10⁸ Mx.
  • Magnetic Flux Density (B) Magnetic flux per unit area. SI unit: Tesla (T). CGS unit: Gauss (G). 1 T = 10,000 G. Also called magnetic induction.
  • Thermal Conductivity (k) Material's ability to conduct heat. SI unit: W/(m·K). Copper: ~400 W/m·K. Air: ~0.026 W/m·K. Critical for heat transfer calculations.
  • Specific Heat Capacity (c) Heat needed to raise 1 kg by 1 K. SI unit: J/(kg·K). Water: 4184 J/(kg·K). Essential for thermodynamics and calorimetry.
  • Heat Flux Density (q) Rate of heat transfer per unit area. SI unit: W/m². Used in HVAC, building insulation, and thermal engineering.
  • World-Class Standards All conversions use NIST, BIPM, and ISO standards. Suitable for academic research, engineering design, and professional applications.

Why Professionals Choose ASLI FORM

Built with precision engineering and premium design, our converters meet the demands of scientists, engineers, and researchers worldwide.

  • Scientific Precision Results accurate to 10 significant digits using NIST-standard conversion factors.
  • Instant Results Real-time conversion as you type — no buttons to click, no waiting.
  • Works Offline All calculations run locally in your browser. Perfect for field work and labs.
  • Universal Compatibility From basic keypad phones to 4K displays — works on every device worldwide.
  • Zero Tracking No cookies, no analytics, no data collection. Your privacy is absolute.
  • Free Forever No subscriptions, no hidden fees, no usage limits, no advertisements.

Frequently Asked Questions

Magnetic flux (Φ) is the total magnetic field passing through a given surface area. It is measured in:
  • Weber (Wb) — SI unit, named after Wilhelm Eduard Weber
  • Maxwell (Mx) — CGS unit, named after James Clerk Maxwell
  • Volt-Second (V·s) — Equivalent to Weber
  • Milliweber (mWb) and Microweber (μWb) — Submultiples
The conversion is: 1 Weber = 10⁸ Maxwell = 1 Volt-Second. Magnetic flux is fundamental in electromagnetic induction, transformer design, and electric motor engineering.
Magnetic flux density (B), also called magnetic induction, is the magnetic flux per unit area perpendicular to the field. While magnetic flux (Φ) is the total field through a surface, flux density (B) is the field strength at a point.
  • Tesla (T) — SI unit, named after Nikola Tesla
  • Gauss (G) — CGS unit, named after Carl Friedrich Gauss
  • Weber/m² (Wb/m²) — Equivalent to Tesla
  • Gamma (γ) — Used in geophysics (1 γ = 10⁻⁹ T)
Conversion: 1 Tesla = 10,000 Gauss = 1 Wb/m². Earth's magnetic field is approximately 25-65 μT (0.25-0.65 Gauss).
Thermal conductivity (k or λ) measures a material's ability to conduct heat. It is critical in:
  • Building insulation — Selecting materials with low k values
  • Heat exchangers — Using materials with high k values
  • Electronics cooling — Thermal interface materials
  • Aerospace — Thermal protection systems
Units include:
  • W/(m·K) — SI unit (Watts per meter-Kelvin)
  • BTU/(hr·ft·°F) — Imperial unit used in US HVAC industry
  • cal/(s·cm·°C) — CGS unit
  • kcal/(h·m·°C) — Metric engineering unit
Examples: Copper ~400 W/m·K, Water ~0.6 W/m·K, Air ~0.026 W/m·K, Aerogel ~0.015 W/m·K.
Specific heat capacity (c) is the amount of heat energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin (or 1°C). It is a fundamental property in thermodynamics.
  • J/(kg·K) — SI unit
  • cal/(g·°C) — Common in chemistry (1 cal = 4.184 J)
  • BTU/(lb·°F) — Imperial unit
  • kJ/(kg·°C) — Metric engineering unit
Notable values: Water = 4184 J/(kg·K), Iron = 449 J/(kg·K), Aluminum = 897 J/(kg·K), Copper = 385 J/(kg·K), Air = 1005 J/(kg·K). Water's high specific heat makes it excellent for temperature regulation.
Heat flux density (q) is the rate of heat energy transfer through a given surface per unit area. It describes how much thermal energy flows through a surface per unit time.
  • W/m² — SI unit (Watts per square meter)
  • BTU/(hr·ft²) — Imperial unit used in HVAC
  • cal/(s·cm²) — CGS unit
  • kW/m² — For high-intensity applications
Applications: Solar radiation (~1000 W/m² at Earth's surface), building heat loss calculations, electronic component cooling, industrial furnace design. The Stefan-Boltzmann law relates heat flux to temperature: q = εσT⁴.
Yes. Our converters use internationally-recognized conversion factors from:
  • NIST — National Institute of Standards and Technology (USA)
  • BIPM — International Bureau of Weights and Measures
  • ISO 80000 — International standard for quantities and units
  • IEC 80000 — International Electrotechnical Commission standards
Results are accurate to 10 significant digits, suitable for engineering calculations, scientific research, academic work, and professional applications. For critical safety applications, always verify with official standards.
The relationship is: Φ = B × A × cos(θ)
  • Φ = Magnetic flux (Weber)
  • B = Magnetic flux density (Tesla)
  • A = Area (m²)
  • θ = Angle between field and surface normal
When the field is perpendicular to the surface (θ = 0°): Φ = B × A. So 1 Tesla × 1 m² = 1 Weber. This relationship is fundamental in Faraday's law of electromagnetic induction: EMF = -dΦ/dt.
These converters are essential in:
  • Electrical Engineering — Motor design, transformer analysis, power systems
  • Electronics — PCB thermal management, component cooling
  • HVAC — Building insulation, heating/cooling system design
  • Aerospace — Thermal protection, electromagnetic shielding
  • Automotive — EV battery thermal management, motor design
  • Materials Science — Thermal property characterization
  • Physics Research — Electromagnetism, thermodynamics experiments
  • Manufacturing — Process heat control, quality assurance
Absolutely. Our converters are designed with a mobile-first responsive approach and work perfectly on every device — from basic keypad phones to 4K desktop displays. The interface adapts intelligently:
  • Desktops — Full-width layout with side-by-side inputs
  • Tablets — Optimized touch targets and spacing
  • Mobile phones — Stacked layout with large, easy-to-tap inputs
  • Small devices — Compact design with essential features
All calculations happen locally in your browser, so the converter works even without internet after the initial page load.
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 privacy is absolute and non-negotiable.
SI (International System) uses:
  • Weber (Wb) for magnetic flux
  • Tesla (T) for magnetic flux density
  • Ampere/meter (A/m) for magnetic field strength
CGS (Centimeter-Gram-Second) uses:
  • Maxwell (Mx) for magnetic flux — 1 Wb = 10⁸ Mx
  • Gauss (G) for magnetic flux density — 1 T = 10,000 G
  • Oersted (Oe) for magnetic field strength
SI is the international standard used in most countries and industries. CGS is still used in some physics research and older literature. Our converter supports both systems.
Key conversion factors for thermal conductivity:
  • 1 W/(m·K) = 0.5778 BTU/(hr·ft·°F)
  • 1 W/(m·K) = 0.002388 cal/(s·cm·°C)
  • 1 W/(m·K) = 0.8598 kcal/(h·m·°C)
  • 1 BTU/(hr·ft·°F) = 1.7307 W/(m·K)
Our converter handles all these conversions automatically with 10-digit precision. Simply select your source and target units, enter the value, and get instant results.

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