Here are the steps to find amps (amperage) from watts
  1. Use the formula: Amps (A) = Watts (W) / Volts (V)
  2. Make sure you have the values for Watts and Volts. The volts are usually the voltage of the power source you are using. Some common voltages:
  • Household outlets in the USA: 120V
  • European household outlets: 230V
  • Car battery: 12V
  1. Plug the values into the formula and calculate:

For example: If your device uses 60 Watts and is plugged into a 120V outlet, then:

Amps = Watts / Volts Amps = 60W / 120V Amps = 0.5 Amps

So if the device uses 60 Watts from a 120 volt power source, the current or amperage needed is 0.5 Amps.

To summarize, divide the Watts by the source voltage in volts to get the amperage or amps required. This works for any electrical device you need to find the amps used.

Table of Contents

Watts To Amps Calculator

This calculator allows you to convert power in watts (W) to current in amps (A), for different system voltages.

Two columns
Vertical
Horizontal
Calculator W to A (DC)
Current strength (I) in A:
Name Total
"{{getWooProductName}}" has been added to your cart
Two columns
Vertical
Horizontal
Calculator W to A (1 phase, alternating current)
Current strength (I) in A:
Name Total
"{{getWooProductName}}" has been added to your cart
Two columns
Vertical
Horizontal
Calculator W to A (1 phase, alternating current)
Current strength (I) in A:
Name Total
"{{getWooProductName}}" has been added to your cart
Two columns
Vertical
Horizontal
W to A Calculator (3 phase, AC, line voltage)
Current strength (I) in A:
Name Total
"{{getWooProductName}}" has been added to your cart
Two columns
Vertical
Horizontal
W to A calculator (3 phases, alternating current, phase voltage)
Current strength (I) in A:
Name Total
"{{getWooProductName}}" has been added to your cart

The formula relating watts, amps and volts is:

Amps (A) = Watts (W) / Volts (V)

Below are examples calculating amperage for different wattages at common voltage levels.

How Many Amps is 250 Watts

VoltageAmps CalculationAmps
12VAmps = 250W / 12V21
24VAmps = 250W / 24V10.42
120VAmps = 250W / 120V2.1
220VAmps = 250W / 220V1.14

How Many Amps is 500 Watts?

VoltageAmps CalculationAmps
12VAmps = 500W / 12V41.7
24VAmps = 500W / 24V20.8
120VAmps = 500W / 120V4.2
220VAmps = 500W / 220V2.3

How Many Amps is 1000 Watts?

Repeating the same calculations, 1000 watts equals:

VoltageAmps CalculationAmps
12VAmps = 1000W / 12V83.3
24VAmps = 1000W / 24V41.7
120VAmps = 1000W / 120V8.3
220VAmps = 1000W / 220V4.5

And so on for other voltages.

1,400 Watts is How Many Amps

VoltageAmps CalculationAmps
12VAmps = 1,400W / 12V117
24VAmps = 1,400W / 24V58.33
120VAmps = 1,400W / 120V12
220VAmps = 1,400W / 220V6.36

3000 Watts Equals How Many Amps?

VoltageAmps CalculationAmps
12VAmps = 3000W / 12V250
24VAmps = 3000W / 24V125
120VAmps = 3000W / 120V25
220VAmps = 3000W / 220V13.6

How Many Amps is 8,000 Watts

VoltageAmps CalculationAmps
12VAmps = 8,000W / 12V667
24VAmps = 8,000W / 24V333.3
120VAmps = 8,000W / 120V67
220VAmps = 8,000W / 220V36.4

How Many Amps is 10,000 Watts

VoltageAmps CalculationAmps
12VAmps = 10,000W / 12V833
120VAmps = 10,000W / 120V83
220VAmps = 10,000W / 220V45.5
24VAmps = 10,000W / 24V416.7

As shown in the examples above, the same wattage yields higher amperage at lower voltages, and lower amperage at higher voltages. You can use this calculator to convert any wattage to amps.

Watts To Amps At Different Voltages

Below are some common voltage systems and how to calculate the amps for different wattages.

Watts To Amps At 12V (For Batteries)

Amps = Watts / 12V

  • 100 Watts = 8.3 Amps
  • 500 Watts = 41.7 Amps
  • 1000 Watts = 83.3 Amps
  • 2000 Watts = 166.7 Amps

And so on.

Watts To Amps At 24V (For Batteries)

Amps = Watts / 24V

  • 100 Watts = 4.2 Amps
  • 500 Watts = 20.8 Amps
  • 1000 Watts = 41.7 Amps
  • 2000 Watts = 83.3 Amps

Watts To Amps At 120V (Standard Outlet)

Amps = Watts / 120V

  • 100 Watts = 0.8 Amps
  • 500 Watts = 4.2 Amps
  • 1000 Watts = 8.3 Amps
  • 1500 Watts = 12.5 Amps

Watts To Amps At 220V (220V Outlet)

Amps = Watts / 220V

  • 100 Watts = 0.45 Amps
  • 500 Watts = 2.3 Amps
  • 1000 Watts = 4.5 Amps
  • 2000 Watts = 9.1 Amps

Watts To Amps At 240V (240V Outlet)

Amps = Watts / 240V

  • 100 Watts = 0.42 Amps
  • 500 Watts = 2.1 Amps
  • 1000 Watts = 4.2 Amps
  • 2000 Watts = 8.3 Amps

And so on for any wattage at these common system voltages.

What are Amps, Volts and Watts?

Amps

Amps, or amperage, refers to electrical current flow. The current flow is the quantity of electrons moving through a circuit.

  • Measures the current
  • Unit of amps (A) or milliamps (mA)
  • Higher amps means more current flow

Volts

Volts, or voltage, refers to the electric potential difference. It is like electrical “pressure” driving the current between two points in a circuit.

  • Measures the electrical “pressure”
  • Unit of volts (V)
  • Higher volts enables more current to flow

Watts

Watts measure the total electricity or power consumption. It is the product of voltage and current.

  • Measures the power
  • Unit of watts (W) or kilowatts (kW)
  • More watts means more total power consumption

AC and DC Power Systems

There are two common types of electrical power systems:

AC Power

  • Alternating Current
  • Voltage and current change direction periodically
  • Used in power grids and wall outlets

DC Power

  • Direct Current
  • Voltage and current flow in one direction
  • Used in batteries, solar panels, cars

So in summary:

  • Amps (A) refers to current
  • Volts (V) refers to voltage
  • Watts (W) refers to power

And these parameters apply to both AC and DC electrical systems.

Similar Posts

Leave a Reply