Average Daylight Factor Calculator

Formula

The formula to calculate the Average Daylight Factor (ADF) is:

\[ \text{ADF} = \frac{\text{TDF}}{\text{N}} \]

Where:

Average Daylight Factor (ADF): The amount of daylight received in an interior space, expressed as a percentage.
Total Daylight Factor (TDF): The total amount of daylight received.
Number of Windows (N): The number of windows in the space.

Let's say the total daylight factor (TDF) is 50 and the number of windows (N) is 5. Using the formula:

\[ \text{ADF} = \frac{50}{5} = 10 \]

So, the average daylight factor is 10%.