Enter the input power (watts) and the efficiency (%) into the calculator to determine the Output Power.

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## Output Power Formula

The following formula is used to calculate the Output Power.

**Po = Pi * E/100**

- Where Po is the Output Power (watts)
- Pi is the input power (watts)
- E is the efficiency (%)

## How to Calculate Output Power?

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

**Example Problem #1:**

- First, determine the input power (watts). In this example, the input power (watts) is measured to be 502.
- Next, determine the efficiency (%). For this problem, the efficiency (%) is calculated to be 20.
- Finally, calculate the Output Power using the formula above:

Po = Pi * E/100

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

Po = 502 * 20/100 = 100.4 (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 power (watts) = 100

efficiency (%) = 20

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

Po = 100 * 20/100 = 20 (watts)