Heat Flux Density Converter

Convert between different units of heat flux density including W/m², kcal/h·m², BTU/h·ft², and more. Essential for thermal engineering and heat transfer calculations.

Base Unit: 1 W/m² = 0.001 kW/m² = 0.0001 W/cm² = 0.000645 W/in² = 1 J/s·m² = 0.859845 kcal(IT)/h·m² = 0.079882 kcal(IT)/h·ft² = 2.38846×10⁻⁵ cal(IT)/s·cm² = 0.001433 cal(IT)/min·cm² = 0.085985 cal(IT)/h·cm² = 2.39006×10⁻⁵ cal(th)/s·cm² = 0.001434 cal(th)/min·cm² = 0.086042 cal(th)/h·cm² = 3.6×10⁶ dyne/h·cm = 36000 erg/h·mm² = 4.111306 ft·lb/min·ft² = 1.24585×10⁻⁴ hp/ft² = 1.26313×10⁻⁴ hp(M)/ft² = 8.80551×10⁻⁵ Btu(IT)/s·ft² = 0.005283 Btu(IT)/min·ft² = 0.316998 Btu(IT)/h·ft² = 6.11903×10⁻⁷ Btu(th)/s·in² = 8.8114×10⁻⁵ Btu(th)/s·ft² = 0.005287 Btu(th)/min·ft² = 0.317210 Btu(th)/h·ft² = 0.176110 CHU/h·ft²

About This Heat Flux Density Converter

Our Heat Flux Density Converter provides precise conversions between different units used to measure heat flux. The tool is essential for thermal engineers, HVAC specialists, and researchers working with heat transfer systems.

The converter uses exact conversion factors based on standard definitions, ensuring accurate results for both practical applications and theoretical calculations. All conversions are derived from the base unit of watt per square meter (W/m²).

Key Features

Comprehensive Units

Convert between 25 different heat flux density units including SI, imperial, and specialized measurements.

Scientific Precision

Handles both small and large values with automatic scientific notation when needed.

Real-time Conversion

See results instantly as you type or change units.

Educational

Learn about relationships between different heat flux measurement systems.

Why Choose Our Converter?

  • Accuracy: Uses exact conversion factors from standard references
  • Versatility: Covers both metric and imperial units
  • User-Friendly: Clean interface with intuitive controls
  • Responsive: Works perfectly on all devices
  • No Installation: Web-based tool accessible from any browser

Frequently Asked Questions

What is heat flux density?

Heat flux density is the amount of heat energy transferred per unit area per unit time. It’s measured in watts per square meter (W/m²) in SI units.

When would I use different units?

W/m² is standard in scientific work, kcal/h·m² is common in building HVAC, and BTU/h·ft² is used in American engineering applications.

What’s the difference between IT and th calorie units?

IT (International Table) calorie = 4.1868 J, while th (thermochemical) calorie = 4.184 J. The difference is about 0.3%.

What are typical heat flux values?

Sunlight: ~1000 W/m²; Human body: ~50 W/m²; Computer chip: ~10⁴ W/m²; Nuclear reactor: ~10⁶ W/m²; Re-entry vehicle: ~10⁷ W/m².