Slack Time Calculator

Calculate Slack Time



Formula

The formula to calculate Slack Time (ST) is:

\[ ST = LST - EST \]

Where:

What is Slack Time?

Slack time is defined as the maximum amount of time a project can be delayed and still be completed within schedule. Mathematically, slack time is equal to the latest possible start time minus the earliest possible start time. Any delay beyond the latest start time would result in project failure.

Example Calculation

Let's consider an example:

Using the formula to calculate the Slack Time:

\[ ST = 10 - 6 = 4 \, \text{hours} \]

This demonstrates that with a latest possible start time of 10 hours and an earliest possible start time of 6 hours, the slack time would be 4 hours.