Convection Calculator
Calculate convective heat transfer Q = hA(T_surface - T_fluid) and solve for any unknown
Convection Calculator
Calculate convective heat transfer. Solve for any unknown in Q = hA(T_s − T_f).
Formula
Q = h · A · (T_surface − T_fluid)
Solve For
Result
Heat Transfer Rate Q
2000.00 W
= 2.0000 kW
ΔT = T_s − T_f
80.00 K
Heat Flux q = Q/A
2000.00 W/m²
Typical h Values (W/m²·K)
How to Use This Calculator
Enter your input values
Fill in all required input fields for the Convection Calculator. Most fields include unit selectors so you can work in your preferred unit system.
Review your inputs
Double-check that all values are correct and that you have selected the right units for each field. Incorrect units are the most common source of calculation errors.
Read the results
The Convection Calculator instantly computes the output and displays results with units. All calculations happen in your browser — no loading time and no data sent to a server.
Formula Reference
Newton's Law of Cooling
Q = h·A·(T_surface − T_fluid)
Variables: h = convection coefficient, A = surface area
When to Use This Calculator
- •Use the Convection Calculator when solving homework or exam problems that require quick numerical verification of your hand calculations.
- •Use it during the design phase to rapidly iterate on parameters before running detailed finite element simulations.
- •Use it when reviewing a colleague's calculation or checking a vendor's data sheet for plausibility.
- •Use it to generate reference data for a technical report or presentation without manual computation.
Related Calculators
Conduction Calculator
Calculate heat conduction through flat walls, cylinders, and spheres with multi-layer flat wall support
Radiation Heat Transfer Calculator
Calculate radiative heat transfer Q = εσA(T₁⁴ - T₂⁴) with common emissivity reference values
Thermal Resistance Calculator
Build series/parallel thermal resistance networks for conduction, convection, and radiation elements
Fin Efficiency Calculator
Calculate fin efficiency and effectiveness for rectangular and annular fins using fin parameter m
Heat Exchanger LMTD Calculator
Calculate log-mean temperature difference and heat transfer rate for parallel and counter-flow heat exchangers
Heat Exchanger NTU Calculator
Calculate NTU, capacity ratio, and effectiveness for parallel flow, counter flow, and shell-and-tube heat exchangers