Enter the inverter power (watts), the inverter voltage (volts), and the power factor into the calculator to determine the Inverter Current. 

Inverter Current Formula

The following formula is used to calculate the Inverter Current.

I = Pi / (Vi * PF)
  • Where I is the Inverter Current (amps)
  • Pi is the inverter power (watts) 
  • Vi is the inverter voltage (volts) 
  • PF is the power factor 

To calculate the inverter current, divide the inverter power by the product of the inverter voltage times the power factor.

How to Calculate Inverter Current?

The following example problems outline how to calculate Inverter Current.

Example Problem #1

  1. First, determine the inverter power (watts). In this example, the inverter power (watts) is determined to be 40 .
  2. Next, determine the inverter voltage (volts). For this problem, the inverter voltage (volts) is measured to be 85 .
  3. Next, determine the power factor. In this case, the power factor is found to be 74.
  4. Finally, calculate the Inverter Current using the formula above: 

I = Pi / (Vi * PF)

Inserting the values from above and solving yields: 

I = 40 / (85 * 74) = .0063 (amps)

Example Problem #2

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

inverter power (watts) = 10

inverter voltage (volts) = 50

power factor = .4

Enter these given values into the calculator or above yields: 

I = 10/ (50* .4) = .5 (amps)