Watts to Amps Converter
Convert between watts and amps with the voltage and current context kept front and center. This page is meant for appliance labels, generator checks, heater specs, and light electrical lookups where the missing number changes as soon as the voltage changes.
Pick the closest common supply voltage first. If the equipment nameplate says something else, enter it in the custom field to override the preset.
Context: AC single-phase at 120 V · 120 V preset
Need HVAC wattage context too?
Use the BTU-to-watts page when the spec started in heating or cooling capacity and you only landed here because the next question is electrical load.
Need more utility conversions?
Stay in the converter cluster when the same equipment sheet also needs HVAC or pressure translation instead of one-off power math.
Utility & HVAC Next Steps
BTU to Watts Converter
Translate HVAC capacity into wattage first when you are comparing heating and cooling labels against electrical specs.
Convert →BTU to Tons Converter
Move from power draw into cooling-capacity language when the next comparison is HVAC sizing rather than electrical load.
Convert →PSI to kPa Converter
Stay inside the utility converter family if the same equipment sheet also mixes pressure units.
Convert →PSI to Bar Converter
Use the pressure-side sibling when a tool, pump, or HVAC accessory spec switches unit systems again.
Convert →Voltage Changes The Answer
This is why a plain watts-to-amps factor page is not enough. The watt label alone cannot tell you the current draw until you know the voltage and whether the context is DC, single-phase AC, or three-phase AC.
Amps = Watts ÷ (Voltage × context multiplier)
Watts = Amps × Voltage × context multiplier
This v1 tool assumes a power factor of 1 so it stays fast and understandable for practical spec translation. That is good for many homeowner and small-equipment checks, but not the same as full electrical design.
Quick Voltage Reference
These common wattage checkpoints help users get a fast answer before they even touch the manual override. All rows below assume the simple single-phase/DC-style relationship; the live tool also supports 208 V and three-phase mode when the equipment spec needs it.
12 V
- 100 W = 8.33 A
- 500 W = 41.67 A
- 1,000 W = 83.33 A
- 1,500 W = 125 A
- 2,000 W = 166.67 A
- 5,000 W = 416.67 A
24 V
- 100 W = 4.17 A
- 500 W = 20.83 A
- 1,000 W = 41.67 A
- 1,500 W = 62.5 A
- 2,000 W = 83.33 A
- 5,000 W = 208.33 A
120 V
- 100 W = 0.83 A
- 500 W = 4.17 A
- 1,000 W = 8.33 A
- 1,500 W = 12.5 A
- 2,000 W = 16.67 A
- 5,000 W = 41.67 A
240 V
- 100 W = 0.42 A
- 500 W = 2.08 A
- 1,000 W = 4.17 A
- 1,500 W = 6.25 A
- 2,000 W = 8.33 A
- 5,000 W = 20.83 A
Worked Appliance Examples
These examples keep the page tied to real appliance and equipment questions instead of drifting into abstract electrical theory.
1,500-watt space heater on 120 V
1,500 W / 120 V = 12.5 amps
That is the practical appliance check many homeowners make before plugging a heater, kettle, or jobsite tool into a standard household circuit.
4,800 watts on 240 V
4,800 W / 240 V = 20 amps
A helpful benchmark for larger heating, water-heating, and equipment loads where the circuit-facing question is amps, not just the watt label.