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How to Convert from Btu (IT)/hour/square foot/°F to Watt/square meter/K
This tool allows you to convert heat transfer coefficients from Btu (IT)/hour/square foot/°F, an imperial unit used in building and HVAC applications, into the SI unit watt/square meter/K for accurate international comparisons and analysis.
Please check your input. It must be a valid numeric value.
Btu (IT)/hour/square foot/%b0F to Watt/square meter/K Conversion Table
| Btu (IT)/hour/square foot/%b0F | Watt/square meter/K |
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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.
| Btu (IT)/hour/square foot/%b0F | Watt/square meter/K |
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What Is This Tool?
This converter transforms heat transfer coefficient values measured in Btu (IT) per hour per square foot per degree Fahrenheit into watts per square meter per kelvin. It is commonly used to translate thermal performance data between imperial and SI units for building envelope components, HVAC calculations, and thermal management.
How to Use This Tool?
- Enter the heat transfer coefficient value in Btu (IT)/hour/square foot/°F
- Choose the target unit watt/square meter/K
- Click convert to get the equivalent value in SI units
- Use the converted result for engineering or thermal analysis purposes
Key Features
- Converts heat transfer coefficient units from Btu (IT)/hour/square foot/°F to watt/square meter/K
- Facilitates U-value comparisons in building codes and product labels
- Assists with HVAC load calculations and energy modeling
- Supports thermal analysis in electronics and heat exchanger design
- Browser-based and easy to use
Examples
- Converting 2 Btu (IT)/hour/square foot/°F yields 11.3565 watt/square meter/K
- Converting 0.5 Btu (IT)/hour/square foot/°F yields 2.8391 watt/square meter/K
Common Use Cases
- Specifying U-values for windows, walls, and roofs under energy codes
- Sizing HVAC equipment and performing energy modeling
- Comparing thermal performance of insulation and building materials
- Thermal management of electronics and heatsink surface heat transfer
- Convective heat transfer evaluation in HVAC and heat exchanger design
Tips & Best Practices
- Ensure correct unit selection before conversion
- Use this tool to translate values for international engineering communication
- Consider material properties and environmental factors beyond nominal values
- Be aware that small rounding differences may occur due to unit translation
Limitations
- Temperature difference units (°F vs K) require precise conversion to avoid errors
- Rounded conversion results can introduce minor inaccuracies
- Actual heat transfer depends on material and environment beyond U-values
Frequently Asked Questions
- What does Btu (IT)/hour/square foot/°F measure?
- It measures the rate of heat flow per hour through one square foot of area for every degree Fahrenheit temperature difference, representing the heat transfer coefficient in imperial units.
- Why convert to watt/square meter/K?
- Converting to watts per square meter per kelvin allows use of SI units for consistent engineering analysis, international standards, and clear communication.
- Can this conversion be used for HVAC design?
- Yes, it supports calculations for heating and cooling loads as well as specifying convective heat transfer coefficients in HVAC system design.
Key Terminology
- Btu (IT)/hour/square foot/°F
- An imperial unit measuring heat transfer rate per hour through a square foot for each degree Fahrenheit difference, often used for overall heat transfer coefficients (U-values) in building components.
- Watt/square meter/K
- The SI unit for heat transfer coefficient, indicating heat flux per area for each kelvin temperature difference, commonly used in engineering and thermal analysis.
- U-value
- The overall heat transfer coefficient representing thermal transmittance through a building element, expressed in units like Btu/(hour·ft²·°F) or W/(m²·K).