PERT vs. CPM in Project Management

Comparison of CPM and PERT – Differences and similarities
There are many sizes to a project, including complex, small, or large. Any project manager must create a plan that will allow the project to be completed within a specified time. Project management tools for efficient project management include PERT and CPM.
CPM stands to Critical Path Method and Pert for Program Evaluation Review Technique.
The Critical Path Method is a method for project management that schedules project tasks. The Program Evaluation Review Technique is a tool for project management that calculates the time required to complete project activities successfully.
Critical Path Method (CPM).

The time management aspect of project management includes the critical path method. CPM is a tool that allows you to create and manage a project schedule. This method calculates the start and finish dates for a project using multiple analytical techniques such as the critical path, critical chain, and resource optimization.
CPM is used for estimating the minimum duration of a project and the minimum resource consumption. This allows for flexibility in project activities and routes. This does not take into account resource limitations.
Flexibility in a schedule can be measured by how long a scheduled activity takes to complete from its start date. This is called “Total Float.” This method can be used to create a negative, zero or positive total floating depending on the constraints.

Understanding the differences between CPM and PERT

PERT and CPM have many similarities in project management. However, the following differences distinguish PERT from CPM.
Program Evaluation Review Technique
Method of Critical Path
Analytic project management is used to determine the exact time it takes for the team to complete the project successfully by managing undefined activities.
An analytical approach to project management that helps in planning the project with a specific start and end date, as well as undertaking the predefined activities.
It is an event-oriented method.
It is an activity-oriented method.
It optimizes project time.
It optimizes resources.
Both critical and non-critical activities can be considered the same.
There is a distinction between critical and non-critical activities.
It is a model for probability.
It is a deterministic system.
It is best suited to non-repetitive events.
It is ideal for repetitive activities in projects.
It does not replicate activities.
It used replicated activities as a way to show the structure of the activities.
Time uncertainties do not cause events to crash.
Structure of activates crashes, as time uncertainties are not present
These are best suited to research and development projects.
These are best suited to construction and development projects.

Program Evaluation Review Technique (PERT)
Program Evaluation Review Technique (PERT), is a method for project scheduling and estimating. It is a probabilistic technique that indicates the expected time to complete the project.
This technique cannot be used to estimate when the project will be completed. It takes into account all uncertainties and all risks. It is a probabilistic network analysis technique that can be used to plan and schedule unpredicted project activities.

PERT vs. CPM-Applications
PERT and CPM share many similarities. They can be used in various areas of network analysis. These are the most common applications of CPM and PERT.
Marketing programs
– Marketing new products
– Establishing new industries.
– Scheduling future projects.
– Large-scale production control.
– Maintenance of resources for a project.
– Planning for the production of new products.
– Management of advertising campaigns.
– Construction, research and development projects
– Maintenance of resources such as financing and staff.

Advantages of PERT vs. the CPM
CPM was created in 1957 and PERT in 1958. Because of their lack of disadvantages, and the large number of benefits, they have been in widespread use for a long period of time.


Optimize resource consumption
– Increases product productivity
– A CPM predicts the impact of activity on a project.
– This tool will help you create a detailed map that includes all details for your project.
– Can be used for reducing the cost and time involved in a project.
– It is easy to measure and organize project tasks using a timeline.
– A PERT Chart helps you to logically process, assign, manage and manage resources.

PERT vs. the CPM – Disadvantages

– Good knowledge is required to understand the generated chart.