Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Heat Exchanger Effectiveness Calculator

Calculate the maximum possible heat transfer rate for a heat exchanger given fluid flow rates, specific heats, and inlet temperatures. Used when sizing or auditing industrial heat exchangers and HVAC coils.

Hot Fluid Inlet Temperature (°C)

Cold Fluid Inlet Temperature (°C)

Hot Fluid Mass Flow Rate (kg/s)

Cold Fluid Mass Flow Rate (kg/s)

Hot Fluid Specific Heat (J/kg·K)

Cold Fluid Specific Heat (J/kg·K)

Fill in the required fields to see your result.

Thermodynamics

Convective Heat Transfer Calculator

Calculates the rate of convective heat transfer between a solid surface and a surrounding fluid using Newton's Law of Cooling. Use it in HVAC design, electronics cooling, and heat exchanger sizing.

Heat Transfer Coefficient (W/(m²·K))

Surface Area (m²)

Surface Temperature (°C)

Fluid Temperature (°C)

Fill in the required fields to see your result.

Key differences

	Heat Exchanger Effectiveness Calculator	Convective Heat Transfer Calculator
Category	Thermodynamics	Thermodynamics
Inputs required	6	4
Result	Maximum Heat Transfer Rate (W)	Heat Transfer Rate (W)
What it does	Calculate the maximum possible heat transfer rate for a heat exchanger given fluid flow rates, specific heats, and inlet temperatures. Used when sizing or auditing industrial heat exchangers and HVAC coils.	Calculates the rate of convective heat transfer between a solid surface and a surrounding fluid using Newton's Law of Cooling. Use it in HVAC design, electronics cooling, and heat exchanger sizing.