Heat Input Calculator

Heat input (kJ/in) = (Voltage x Amperage x 60) / (1,000 x Travel speed). Same formula used by the Welding Cost Analysis Tool.

Heat input (kJ/in) = (Average power x Weld time) / Weld length. Pulse current is not a steady-state waveform, so use a true average-power reading (power meter, data logger, or oscilloscope) rather than nominal voltage x amperage.

Travel speed (in/min) = (Voltage x Amperage x 60) / (1,000 x Target heat input). Solves the GMAW heat-input formula for travel speed.