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Convert Watt/square meter [W/m^2] to Btu (th)/second/square foot
Easily convert heat flux density values from watt per square meter to Btu (th)/second/square foot with this online unit converter tool designed for building science, HVAC, and thermal engineering applications.
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Watt/square meter [W/m^2] to Btu (th)/second/square foot Conversion Table
| Watt/square meter [W/m^2] | Btu (th)/second/square foot |
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Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Watt/square meter [W/m^2] | Btu (th)/second/square foot |
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What Is This Tool?
This tool converts heat flux density measurements specifically from watt per square meter, the SI unit, to Btu (th)/second/square foot, an Imperial unit used in various engineering and building contexts to express heat transfer rate per unit area.
How to Use This Tool?
- Enter the heat flux density value in watt per square meter
- Select watt/square meter [W/m^2] as the input unit
- Choose Btu (th)/second/square foot as the target output unit
- Click the convert button to see the equivalent value
- Use the provided conversion formula and examples as guides
Key Features
- Converts heat flux density between SI and Imperial units
- Supports watt per square meter and Btu (th)/second/square foot units
- Helps translate values for HVAC, solar energy, and building thermal design
- Provides clear examples for straightforward calculations
- Browser-based and easy to use without any installation
Examples
- 100 W/m^2 converts to 0.0088114 Btu (th)/second/square foot
- 500 W/m^2 converts to 0.044057 Btu (th)/second/square foot
Common Use Cases
- Assessing solar irradiance for photovoltaic panel performance
- Calculating heat loss or gain in building components
- Designing HVAC systems and evaluating furnace heat flux
- Estimating heat transfer through walls and insulation
- Fire-exposure testing and assessing material flammability
Tips & Best Practices
- Always confirm the unit definitions to maintain conversion consistency
- Use the tool to facilitate design and analysis in both SI and Imperial systems
- Apply the converter in steady-state thermal scenarios for best relevance
- Double-check calculations when dealing with irregular or non-uniform surfaces
Limitations
- Thermochemical Btu units differ slightly from other Btu types, affecting precision
- Conversion may be less reliable in transient thermal conditions
- Irregular or non-uniform heating of surfaces can affect conversion accuracy
Frequently Asked Questions
- What does watt per square meter measure?
- It measures heat flux density, indicating how many joules per second cross each square meter of a surface.
- Why convert watts per square meter to Btu (th)/second/square foot?
- Converting allows users to work with Imperial units commonly used in HVAC and building science fields, making data more applicable to certain projects.
- Can this tool be used for transient heat transfer calculations?
- The conversion tool is best suited for steady-state conditions; caution should be taken when applying it in transient scenarios.
Key Terminology
- Watt/square meter [W/m^2]
- The SI unit of heat flux density representing power transfer per unit area.
- Btu (th)/second/square foot
- An Imperial heat flux density unit measuring thermochemical British thermal units transferred per second across one square foot.
- Heat flux density
- The rate of heat energy transfer per unit surface area, expressed in power per area units.