Enter the input voltage (volts) and the input current (volts) into the calculator to determine the Input Power.

- All Electrical Calculators
- Single Phase Power Calculator
- Output Power Calculator
- Instantaneous Power Calculator
- Variable Input Calculator

## Input Power Formula

The following formula is used to calculate the Input Power.

IP = IV * II

- Where IP is the Input Power (watts)
- IV is the input voltage (volts)
- II is the input current (volts)

To calculate the input power, multiply the input voltage by the input current.

## How to Calculate Input Power?

The following two example problems outline how to calculate the Input Power.

**Example Problem #1:**

- First, determine the input voltage (volts). In this example, the input voltage (volts) is measured to be 86.
- Next, determine the input current (volts). For this problem, the input current (volts) is calculated to be 54.
- Finally, calculate the Input Power using the formula above:

IP = IV * II

Inserting the values from above and solving the equation with the imputed values gives:

IP = 86 * 54 = 4644 (watts)

**Example Problem #2: **

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

input voltage (volts) = 4

input current (volts) = 56

Entering these values into the formula or calculator above gives us::

IP = 4 * 56 = 224 (watts)