Heat Transfer Coefficient Calculator
Calculate h from heat rate, area, and temperature difference.
How to Use This Calculator
1
Enter q
Measured or estimated heat transfer rate.
2
Enter A
Surface area across which heat is transferred.
3
Enter ΔT
Temperature difference between surface and fluid.
Formula
h = q / (A × ΔT)
Example: q=500 W, A=1.2 m², ΔT=10 K → h≈41.67 W/m²·K
About Heat Transfer Coefficient
h characterizes convective heat transfer between a surface and fluid.
Frequently Asked Questions
Typical ranges?
Natural convection 5–25; forced air 25–250; liquids 100–10,000 W/m²·K.
What affects h?
Fluid properties, flow regime, geometry, surface roughness.