kW to Amps

Turn a load rating in kilowatts into the current your circuit must carry — and pick the right breaker.

Motors ≈ 0.8–0.95, heaters ≈ 1
Formulas
Single-phase: A = (kW × 1000) ÷ (V × PF)
Three-phase: A = (kW × 1000) ÷ (√3 × V × PF)

Breaker derating raises the current to size the protective device safely.

🔧 Load to current

Straight from the nameplate to the panel.

⚡ Three-phase

√3 factor handled automatically.

🔋 Breaker pick

Derates for motor and intermittent loads.

🔢 Standard sizes

Suggests the next common breaker rating.

More electrical tools

Everything from watts to wire size.