PERT stands for "Project Evaluation and Review Technique," which is a method of project management used to manage complex projects. It uses a network diagram to show the interdependencies between tasks, and uses this diagram to help predict the time it will take to complete the project.

A PERT chart is a type of diagram that shows which tasks must be completed before other tasks can begin, how long each task will take, and how long it will take to complete the entire project. Each task is given an estimate for how long it will take to complete. Once all of these estimates are gathered together, they're used to create a graph that shows how long each part of the project will take. This allows you to see how much time has already been spent on each part of your project and how much time remains before you'll be finished with it—and if there's anything you need to do differently than what you originally planned!

In project management, a PERT chart (also known as a network diagram) is a diagram that maps out the tasks involved in a project and their estimated completion times. It also shows how long it will take to complete the entire project based on how long it takes to finish each individual task. The name comes from an acronym for Program Evaluation Review Technique, which is an approach to project management that was developed by the US Navy in 1957.

Typically, PERT charts are used to plan large projects with multiple steps or phases. They can be created using software like Microsoft Excel or Primavera Portfolio Management.

A PERT chart is a graphical representation of a project timeline, created with the help of a software tool or manually. The purpose of a PERT chart is to help you visualize and understand how long various steps in your project will take, as well as the dependencies between those steps.

It's helpful because it allows you to see:

• Your project's timeline as a whole
• The duration of each step
• The dependencies between steps