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

### 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).

I want to combine 2 solar panels. One is 390 watts,the other is 275. My charge controller is good for 150 volts. Will this work.

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.

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?

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.