Heat Transfer Coefficient Converter

The capacity of a substance or interface to transport heat from one area to another is measured by its heat transfer coefficient. It shows the speed at which heat radiates, convenes, or passes through a surface or the interface between two materials.

Popular Unit Heat Transfer Coefficient Conversions

The most used and popular units of Heat Transfer Coefficient conversions are presented for quick and free access.

Frequently Asked Questions

What is Heat Transfer Coefficient?

The heat transfer coefficient indicates the amount of heat energy transferred per unit area at any one time for a given temperature difference. This is the primary unit used in heat transfer calculations and is expressed in units of watts per kelvin (W/m2·K) or watts per square meter per degree Celsius (W/1). m2·°C).

Heat transfer depends on many factors, including the nature of the components involved, the surface, the overall temperature difference between the interfaces, the flow rate (convective heat transfer), and the nature of other influential factors as a weak surface, barrier or insulation, and geometric configurations.

In practical applications, heat transfer coefficients are usually determined experimentally by measurements or estimated by empirical correlations based on similar systems It is an important parameter in design and analysis on heat exchangers, cooling systems, insulation, and various others.

How to Convert Heat Transfer Coefficient?

To convert the heat transfer coefficient from one unit to another, you can use the following conversion factors:

1 W/m²·K = 1 W/m²·°C

To convert from W/m²·K to W/m²·°C, use the same numerical value for both units. For example, a heat transfer coefficient of 100 W/m² is equivalent to 100 W/m²·°C.

To convert from W/m²·°C to W/m²·K, again use the same numerical value for both units. For example, if you have a heat transfer coefficient of 50 W/m²·°C, it is equivalent to 50 W/m²·K.

Suppose we have a metal plate with dimensions of 1 meter by 1 meter (surface area = 1 m²). The plate is in contact with a fluid (such as air) with a temperature of 30°C. The plate's temperature is maintained at 100°C. The convective heat transfer rate from the plate to the fluid is measured to be 500 Watts.

To calculate the heat transfer coefficient, we can use the formula:

Q = h × A × ΔT


Q = Heat transfer rate (500 Watts in this case)

h = Heat transfer coefficient (to be calculated)

A = Surface area (1 m² in this case)

ΔT = Temperature difference between the plate and the fluid (100°C - 30°C = 70°C or 70 Kelvin)

Rearranging the formula, we have:

h = Q / (A × ΔT)

h = 500 W / (1 m² × 70 K) ≈ 7.14 W/m²·K

Therefore, the heat transfer coefficient in this example is approximately 7.14 W/m²·K. This value represents the rate at which heat is transferred per unit area per unit temperature difference between the plate and the fluid.

How to Use the Heat Transfer Coefficient Converter?

To use a heat transfer coefficient converter, follow these steps:

  • Identify the original unit and value: Know the value and its current unit that you wish to convert.
  • Select the target unit:Choose the unit you want to convert the value to.
  • Input the value into the converter: Use the converter tool by entering the value.
  • Perform the conversion: The tool will automatically calculate and display the value in the target unit.

Which units can be converted using the Heat Transfer Coefficient converter?

The units that can be used in the Heat Transfer Coefficient Calculator depend on the specific type of heat transfer being considered. Here are the common units for each type:

(∆T): Kelvin (K), degrees Celsius (°C), degrees Fahrenheit (°F)

For Conduction

Thermal conductivity (k): W/m·K, W/m·°C, BTU/(hr·ft·°F)

Thickness (L): meters (m), inches (in), feet (ft), etc.


Heat transfer rate (Q): Watts (W), BTU/hr, etc.

Surface area (A): square meters (m²), square feet (ft²), etc


Stefan-Boltzmann constant (σ): 5.67 × 10^-8 W/(m²·K⁴)

Emissivity (ε): unitless or a ratio

Surface area (A): square meters (m²), square feet (ft²), etc.

How Accurate is the Heat Transfer Coefficient converter?

The accuracy of a Heat Transfer Coefficient Calculator depends on various factors, including the underlying equations and assumptions used in the calculator, the accuracy of the input parameters provided, and the implementation of the calculator itself.