Watt to Amp Converter

Convert watts to amperes for DC, single-phase AC, and three-phase AC circuits. Calculate current requirements for electrical loads and circuit design.

Watt to Amp Conversion Formulas

DC Circuit

I = P / V
Current = Power ÷ Voltage

Single Phase AC

I = P / (V × PF)
Current = Power ÷ (Voltage × Power Factor)

Three Phase AC

I = P / (√3 × V × PF)
Current = Power ÷ (√3 × Voltage × Power Factor)

Circuit Type

Conversion Parameters

W
V

About Watt to Amp Conversion

Converting watts to amperes is essential for electrical circuit design, wire sizing, and breaker selection. The conversion depends on circuit type and power factor.

Key Concepts:

  • Power (Watts): Rate of energy consumption
  • Current (Amperes): Flow of electrical charge
  • Voltage: Electrical potential difference
  • Power Factor: Efficiency of AC power usage

Circuit Types:

  • DC: Direct current, constant voltage
  • Single Phase AC: Alternating current, residential
  • Three Phase AC: Industrial power systems

Safety Considerations:

  • Always use appropriate safety factors
  • Consider ambient temperature effects
  • Account for voltage drop in long runs
  • Follow local electrical codes