A Gantt Chart is a graphical representation used in project management that will show the length of time tasks in the project should take, as measured against real time. This helps the project to run more smoothly because:
- you can easily see the order of tasks.
- you can see project progress in terms of where you are and where you should be, because each task is given a time allotment.
- helps you see any dependencies that may exist between tasks.
Not only will this help with the planning phase of the project where you must decide the course of action to take, but it will also help monitor the project and keep it on track.
The Gantt Chart was invented by Henry Laurence Gantt during the 1910's. He passed away in 1919, but in the 1920's, his charts started becoming an accepted visual aid for the progression and tracking of a project. By the 1950's, his charts were being used in many major projects all over world.
The first Gantt Charts were nothing more than a series of tasks on the left hand side of the paper, with a calendar of dates running across the top. All you had to do was color in a bar to represent the length of time each task was to take, and therefore you were able to see an estimate of how long the entire project should take. Looking at this, you could also see the progress on a project, the same way you can with today's Gantt Charts.
Milestone Charts were also used in conjunction with this basic Gantt Chart, to notate only the important portions of a project. In today's project management and Gantt Charts, we generally see the two charts combined, so that we can see the timeline and milestone expectations together.
Common programs for creating Gantt Charts are Microsoft Project, Microsoft Visio and Microsoft Excel. If you need another option, there are several programs available.You can read about them by clicking here.
For more information on creating a Gantt Chart in Excel, please see this article: How to Create a Gantt Chart in Excel, and the accompanying sample Gantt Chart.