Watts To Volts Converter (W to V): Calculator + Conversion Chart

If we know the amperage (A), we can easily convert watts to volts. For the W to V conversion, we can use the formula for electric power:

P (W) = I (A) * V (V)

To calculate volts from watts, we need to rearrange this formula by expressing voltage like this:

Volt = Watts / Amps

To convert watts to volts, we need to know how many amps does the electrical circuit has.

Example 1: 1 volt is equal to how many watts? If you have a 1 amp circuit, 1 volt is equal to 1 watt. If you have a 100 amp circuit, 1 volt is equal to 100 watts.

Example 2: How many watts in a volt? Amps are the key here as well; in a 1 amp circuit, you have 1 watt per volt. If you have a 10 amp circuit, you will have 10 watts in a volt.

You can freely use this handy watts to volts calculator by inserting W and A. Further on, you’ll find a conversion chart with calculated volts from watts at certain amps:

Watts To Volts Calculator

0.00 V

Calculated Volts (V)

 

Watts To Volts Conversion Chart

It’s useful to know that how many volts are in a watt.

In short, 1 watt is equal to 1 amp (at 1V). Based on this, we can calculate this conversion table:

Watts (W) Amps (A) Volts (V)
How many volts in 1 watt? 1 amp 1 volt
How many volts in 1 watt? 2 amps 2 volts
How many volts in 1 watt? 3 amps 3 volts
How many volts in 1 watt? 4 amps 4 volts
How many volts in 1 watt? 5 amps 5 volts
How many volts in 2 watts? 1 amp 2 volts
How many volts in 10 watts? 1 amp 10 volts
How many volts in 20 watts? 1 amp 20 volts
How many volts in 50 watts? 1 amp 50 volts
How many volts in 100 watts? 1 amp 100 volts
How many volts in 200 watts? 1 amp 200 volts
How many volts in 500 watts? 1 amp 500 volts
How many volts in 1000 watts? 1 amp 1000 volts
How many volts in 2000 watts? 1 amp 2000 volts
How many volts in 3000 watts? 1 amp 3000 volts
How many volts in 4000 watts? 1 amp 4000 volts
How many volts in 5000 watts? 1 amp 5000 volts

If you have any specific watts to volts conversion in mind, you can use the comments below and we’ll try to help you out. Please do include the amperage (A).

4 thoughts on “Watts To Volts Converter (W to V): Calculator + Conversion Chart”

    • Hello Howard, the combined wattage is 665W and you have a 150V charge controller. That controller needs to handle 665W/150V = 4.5 amps. If it can, then it’s good; if not, you can’t really do this.

      Reply
  1. I want to combine 2 solar panel. one is 250 watts the other one is180 watts my charge controller is 24 volts, so how many ampere of battery will I need?

    Reply
    • Hello there, you can tally up the wattages and calculate amps from there (since you know the voltage). You’re dealing with 250W + 180W = 430 watts and you have a 24-volt circuit. Here’s how you can calculate amps: 430W / 24V = 18 amps. You will need at least 18 amp battery, 20 amp would be the safe option.

      Reply

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