Skip to content
ToolStaxx Tools that stack up

Power & Electrical

Single Phase Current Calculator

Estimate current from watts, voltage and power factor for single-phase loads.

Estimator only. Load type, diversity, starting current and installation design still matter.

Notes and next steps

How it works

Estimate single-phase current from real power, voltage and power factor.

Formula used: Current = watts ÷ (voltage × power factor).

Worked example

2300 W at 230 V with power factor 1.0 is 10 A.

Common mistakes
  • Using kW where the field expects watts.
  • Ignoring power factor for motors or drivers.
  • Treating an estimate as a final cable/device design.
Related tools

Next useful tools for this task.