PRELIMINARY ENGINEERING TOOL
Amps to kW calculator
Convert electrical load ratings with transparent assumptions and a substituted formula.
Inputs
Calculation steps
P = 230.000 × 10 × 0.8 × 1
Formula ID: POWER_SINGLE_PHASE_A_V1
System voltage factor: 230.000
Assumptions and references
Preliminary calculation only. Verify inputs, manufacturer data, applicable standards, fault levels, and local requirements before construction or procurement.
UNDERSTAND THE TOOL
What this calculator does
Current alone does not state active power. This guide shows how voltage and, on AC systems, power factor combine with current to give a preliminary kW estimate.
How to use it
- Select DC, single-phase AC, or balanced three-phase AC.
- Enter the measured or design current and nominal operating voltage.
- For AC systems, enter the measured or assumed power factor.
- Compare the output with known load data and review the calculation trace.
Fields and meanings
- Current
- The measured or design line current in amperes.
- Voltage
- Nominal or measured voltage for the same operating point.
- Power factor
- Required for AC active-power estimates.
- System type
- Determines whether the calculation uses one phase or a balanced three-phase relationship.
Review required. A clamp-meter reading can vary with load state; capture the operating condition.
Read the full power conversion article →