Enter the total light load (watts) and the total light area (ft^2) into the Lighting Power Density (LPD) Calculator. The calculator will evaluate the Lighting Power Density (LPD).

## Lighting Power Density (LPD) Formula

The following two example problems outline the steps and information needed to calculate the Lighting Power Density (LPD).

LPD = LL / LA

Variables:

- LPD is the Lighting Power Density (LPD) (watts/sq-ft)
- LL is the total light load (watts)
- LA is the total light area (ft^2)

To calculate the lighting power density, divide the total light load by the total light area.

## How to Calculate Lighting Power Density (LPD)?

The following steps outline how to calculate the Lighting Power Density (LPD).

- First, determine the total light load (watts).
- Next, determine the total light area (ft^2).
- Next, gather the formula from above = LPD = LL / LA.
- Finally, calculate the Lighting Power Density (LPD).
- 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 light load (watts) = 500

total light area (ft^2) = 300

LPD = LL / LA** **= ?