Volts to Watts Converter: Your Handy Calculator

Calculate electrical power (watts) by entering voltage and current values. Power (W) = Voltage (V) × Current (A)

Enter values above to calculate power

Quick Reference

  • Power (Watts) = Voltage (Volts) × Current (Amps)
  • 1 kilowatt (kW) = 1,000 watts
  • 1 horsepower = 746 watts

Common Examples

  • LED Bulb: 120V × 0.1A = 12W
  • Laptop Charger: 19V × 3.42A = 65W
  • Space Heater: 120V × 12.5A = 1,500W

Use this volts to watts converter to get clear wattage fast.

It takes voltage and current, then returns watts.

Enter numbers and click the calculate button.

You are done.

The math follows a basic rule used in circuits.

People use it for school and lab work.

It helps with home projects.

How It Works

Watts equal volts times amperes.

That relation fits direct current and resistive loads.

For alternating current with power factor below one, true wattage equals volts times amperes times this factor.

The calculator accepts decimals.

It rounds watts to two decimal places.

When results reach one thousand watts or more, kilowatts appear with three decimals.

How to Use This Tool

  1. Click the field named "Voltage (V)" and enter a value in volts.
  2. Click the field named "Current (A)" and enter a value in amperes.
  3. Press the calculate button.
  4. Read the result in watts, kilowatts appear for large results.
  5. Select Clear to reset the inputs and the result.
  6. Press Enter in any field to run the calculation.
Input fields explained

Why Use the Volts to Watts Converter?

This tool gives quick results you can trust.

Common use cases

Benefits of This Tool

You get clear guidance and less guesswork.

What the result shows Notes and limits

Final Thoughts

This volts to watts converter keeps wattage math quick and clear.

Keep it close for your next build or check.

Type values and click calculate.

Then move on.