How to Calculate Between W/m²⋅°C and Btu/h⋅ft²⋅°F

The W/m²⋅°C to Btu/h⋅ft²⋅°F and Btu/h⋅ft²⋅°F to W/m²⋅°C Calculator converts between Watts per square meter per degree Celsius (W/m²⋅°C) and British Thermal Units per hour per square foot per degree Fahrenheit (Btu/h⋅ft²⋅°F) for heat transfer coefficients in engineering contexts. The formulas are:

Where:

• \( W/m^2 \cdot ^\circ C \): Watts per square meter per degree Celsius, a unit of heat transfer coefficient.
• \( Btu/h \cdot ft^2 \cdot ^\circ F \): British Thermal Units per hour per square foot per degree Fahrenheit, an imperial unit of heat transfer coefficient.

Select the conversion direction, enter the input value, and calculate the result.

Using the W/m²⋅°C and Btu/h⋅ft²⋅°F Mutual Conversion Calculator

This calculator is useful for thermal engineering, HVAC design, or building insulation calculations, such as converting heat transfer units, supporting bidirectional conversions.

Select the direction (W/m²⋅°C to Btu/h⋅ft²⋅°F or Btu/h⋅ft²⋅°F to W/m²⋅°C), input the value. The calculator outputs the converted value.

Example 1: For a heat transfer coefficient of 1 W/m²⋅°C to Btu/h⋅ft²⋅°F.

1. Direction: W/m²⋅°C to Btu/h⋅ft²⋅°F
2. Input: \( 1 \)
3. Calculation: \( Btu/h \cdot ft^2 \cdot ^\circ F = 1 \times 0.17612 = 0.17612 \)
4. Result: \( 0.17612 \, \text{Btu/h⋅ft²⋅°F} \)

Example 2: For a value of 1 Btu/h⋅ft²⋅°F to W/m²⋅°C.

1. Direction: Btu/h⋅ft²⋅°F to W/m²⋅°C
2. Input: \( 1 \)
3. Calculation: \( W/m^2 \cdot ^\circ C = 1 / 0.17612 \approx 5.67826 \)
4. Result: \( 5.67826 \, \text{W/m²⋅°C} \)

Use this tool for quick bidirectional conversions in engineering analysis.

Common FAQ

Below are frequently asked questions about W/m²⋅°C and Btu/h⋅ft²⋅°F conversions:

• Q: What is W/m²⋅°C?
  A: W/m²⋅°C stands for Watts per square meter per degree Celsius, a metric unit for heat transfer coefficient.
• Q: What is Btu/h⋅ft²⋅°F?
  A: Btu/h⋅ft²⋅°F stands for British Thermal Units per hour per square foot per degree Fahrenheit, an imperial unit for heat transfer coefficient.
• Q: Is the conversion always 1 W/m²⋅°C = 0.17612 Btu/h⋅ft²⋅°F?
  A: Yes, based on standard unit conversions where 1 W/m²⋅°C ≈ 0.17612 Btu/h⋅ft²⋅°F.
• Q: How accurate is this calculator?
  A: It provides precise results based on the formulas, rounded to 5 decimals.
• Q: Can negative values be used?
  A: No, input values must be positive; invalid inputs leave the result blank.