Electrical
Amp Conversions
Convert between watts and amps for single-phase and three-phase AC/DC circuits.
Safety/code-sensitive estimate. This calculator is not a substitute for licensed professional review, applicable code requirements, manufacturer instructions, field verification, permits, or inspections. Do not rely on this result as the sole basis for work that could affect life safety, fire safety, electrical safety, structural safety, public safety, property damage, code compliance, or required licensure.
Formula: W = V × I × PF (single phase) | W = √3 × V × I × PF (3-phase)