Weld Heat Input Calculator
Weld Heat Input
Calculate heat input for arc welding processes.
Formula
Heat Input (kJ/in) = (Voltage x Amps x 60 / Travel Speed) x Efficiency / 1000
Frequently Asked Questions
Why does heat input matter?
Heat input affects the weld microstructure, distortion, and residual stress.
What is a typical efficiency for MIG welding?
MIG or GMAW typically has a process efficiency of 80 to 85 percent.