Enter the total percent of leaf disks float (%) and the total time (min) into the ET50 Calculator. The calculator will evaluate the ET50.

## ET50 Formula

The following two example problems outline the steps and information needed to calculate the ET50.

ET50 = T / PFL * 50

Variables:

- ET50 is the ET50 ( )
- PLF is the total percent of leaf disks float (%)
- T is the total time (min)

To calculate the ET50, divide the total time by the total percent of leaf disks float.

## How to Calculate ET50?

The following steps outline how to calculate the ET50.

- First, determine the total percent of leaf disks float (%).
- Next, determine the total time (min).
- Next, gather the formula from above = ET50 = T / PFL * 50
- Finally, calculate the ET50.
- 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 percent of leaf disks float (%) = 60

total time (min) = 3

ET50 = T / PFL * 50 =?