120V Voltage Tool

120V Watts to Amps Calculator

Calculate amps from watts at 120V. 120V AC — standard US household voltage for 15A and 20A circuits. Enter your watts below and choose DC, single-phase AC, or three-phase AC.

Conversion direction

Electrical system

PowerWVoltageV

Quick voltage presets

Calculated result1000 W · 120 V · DC

8.333 A

Formula usedI = P / V

Custom voltage is always supported.

Formulas Used

DCI = P / V

No power factor needed for DC circuits.

AC 1φI = P / (V × PF)

Single-phase AC — multiply voltage by power factor.

AC 3φI = P / (√3 × V × PF)

Three-phase AC — divide by √3 ≈ 1.732.

Frequently Asked Questions

How do I convert watts to amps at 120V?

DC formula: Amps = Watts / 120. For AC, divide by (120 × Power Factor). Example: 1000W / 120V = 8.3333 A DC.

What is 1000 watts in amps at 120V?

8.3333 A for DC. For single-phase AC at PF 0.9: 9.2593 A.

What is 2000 watts in amps at 120V?

16.6667 A DC. Single-phase AC (PF 0.9): 18.5185 A.