Three-phase power is used in industrial equipment, large HVAC, and commercial buildings.
3-phase power (kW) = √3 × V × I × PF / 1000
This tool is most useful when working from known parameters toward an unknown output — the standard direction of engineering calculation. Enter measured or specified values to get the derived result.
Many engineering errors stem from applying a formula outside its valid range. Most standard engineering formulas have boundary conditions — material limits, temperature ranges, or loading assumptions — that must be satisfied for the result to be reliable.
A student working on a thermodynamics problem set needs to confirm the result of a heat transfer calculation before submission. The calculator applies the formula with correct constants and returns the result with appropriate SI units — the format required for a valid answer.
P (kW) = √3 × Voltage × Current × Power Factor ÷ 1000