# Solar Panel Amps Calculator (Watts to Amps)

Use our solar panel amps calculator to calculate the solar panel amps or convert solar panel watts to amps.

## Solar Watts to Amp Calculator

Solar Panel output (Watts)
Watts
Solar Panel Vmp (Operating Voltage) Or Battery Voltage
V

### How to use this calculator?

1. Solar panel output: Enter the total capacity of your solar panel (Watts).
2. Vmp: Is the operating voltage of the solar panel which you can check at the back side of your solar panel.
3. Battery Volts: Enter the battery volts if you wanna know how many amps your battery bank is storing from the solar panels.
4. Click the "CALCULATE" box for the result.

## Some key points before you leave

We usually measure or convert the watts into amps of solar panels to figure out how much current (amps) is being stored in the battery.

Or we measure the amperage of the solar panel output to select the wire size from solar panels to the charge controller.

So if your goal is to figure out how many amps are being stored in the battery then enter the voltage of your battery (for example 12 for a 12v battery).

If your goal is to select the wire size between your solar panel and the charge controller then I would recommend you buy this multimeter. Digital Multimeter to check the voltage, & amps of solar panel

Digital Multimeter
Check Price (Amazon)

To measure the Vmp (operating volts), connect the solar panels to the charge controller, then the red wire of the multimeter with the solar panel male MC4 connecter and the black wire of the multimeter with the female MC4 connecter of a charge controller.

This way you can figure out the operating amps, and operating volts of your solar panel.

## Example

Here's an example to calculate the amps produced by a 200W solar panel.

### 200-watt solar panel how many amps?

• Solar panel size: 200 watt
• Vmp (operating volts): 22.6 volts

200-watt solar panel will produce 8.85 amps under standard test conditions (STC).

## How do I calculate solar panel amps?

To calculate the amps from watts use this formula.

``Amps = Watts ÷ volts ``

## Solar Panel amps (12v, 24v, 48v)

### Summary

• 100-watt solar panel will store 8.3 amps in a 12v battery per hour.
• 300-watt solar panel will store 25 amps in a 12v battery per hour.
• 400-watt solar panel will store 33.3 amps in a 12v battery per hour.
• 500-watt solar panel will store 41.6 amps in a 12v battery per hour.
• 600-watt solar panel will store 50 amps in a 12v battery per hour.