Enter the total number of photons and the total wattage (watts) into the Calculator. The calculator will evaluate the Photons Per Watt.

## Photons Per Watt Formula

PPW = P / W

Variables:

- PPW is the Photons Per Watt (photons/watt)
- P is the total number of photons
- W is the total wattage (watts)

To calculate Photons Per Watt, divide the number of photons by the total wattage.

## How to Calculate Photons Per Watt?

The following steps outline how to calculate the Photons Per Watt.

- First, determine the total number of photons.
- Next, determine the total wattage (watts).
- Next, gather the formula from above = PPW = P / W.
- Finally, calculate the Photons Per Watt.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

total number of photons = 1500

total wattage (watts) = 400