Enter the total open area and the total overall area into the Calculator. The calculator will evaluate the Open Area Percentage.

## Open Area Percentage Formula

OAP = OA / TA * 100

Variables:

- OAP is the Open Area Percentage (%)
- OA is the total open area
- TA is the total overall area

To calculate the Open Area Percentage, divide the total open area by the total area, then multiply by 100.

## How to Calculate Open Area Percentage?

The following steps outline how to calculate the Open Area Percentage.

- First, determine the total open area.
- Next, determine the total overall area.
- Next, gather the formula from above = OAP = OA / TA * 100.
- Finally, calculate the Open Area Percentage.
- 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 open area = 160

total overall area = 800