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Strategy

PERT Formula: A Guide to Project Timeline Calculation

This article explains the PERT formula, showing how to calculate project timelines using optimistic, pessimistic, and most likely estimates.

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05 Mar 2026
PERT Formula: A Guide to Project Timeline Calculation
The Growing Demand for Project Management Careers in 2025
2 min 40 sec
How Many Hours Do Project Managers Really Work?
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Collaboration or Teamwork? Which Is Better for Your Project?
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AI in Project Management: Use Cases in Waterfall and Agile Environments
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Sustainable Project Management: Balancing Success with Responsibility
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Lean vs Kanban: What You Need to Know in Project Management
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Becoming a Successful Project Manager: Essential Skills and Tips
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How to Make Better Decisions in Project Management
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Transitioning to Project Management: A Complete Guide
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Crisis Management for Project Leaders
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The Impact of AI in Project Management and Remote Jobs
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What is Project Portfolio Management?
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Five Common Business Risks and Mitigation Strategy
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3 Most Common Reasons for Project Failure
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Elevate Your Career with PMI Certification
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Robots Moving
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Mastering Project Management with PRINCE2 Foundation
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Influence Without Authority: Critical Skills for Project Leadership Success
1 min 42 sec
Sustainable Project Management
2 min 10 sec
Master Strategic Project Management
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Career Competition for Project Managers
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How to Recruit Project Managers
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Is Project Management Becoming Too Competitive?
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International Project Management Day
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Scrum Certification Boost Your Agile Skills
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Virtual Project Management: Benefits and Challenges
4 min 24 sec
What is Sprint Planning? Easy Guide for Agile Teams
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How Weaknesses in Operations Affect a Project
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Digital Heatlhcare: Cyber Risk Analysis
14 min 56 sec
Programme Management vs Project Management
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The Value of Project Management Certifications
1 min 51 sec
Step by Step of Acquiring PMP® Certification
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Advance Your Career with a PMP Certification
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Join IPM’s Global Community | IPM Hub & Membership
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Best Practices for PMOs in Managing Project Portfo
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The Art of Saying “No” in Project Management
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Integrating Agile Methodologies into Traditional Project Management Environments
2 min 8 sec
Operational Technology Cyber Gap Assessment
10 min 14 sec
AI Integration Playbook for Project Professionals
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Master Prompt Engineering for Better Decisions
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AI‑Powered Decision‑Making for Project Managers
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Data Protection Impact Assessment & Third Party Risk Management
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AI + Human Leadership
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Skills Gap Analysis & Employee Development
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Why Professional Development Matters for Employees
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Managing Hybrid Cloud Projects with Agile and Waterfall
14 min 6 sec
Share Your Insights to Project Management Community
1 min 49 sec
What are Stakeholders and Why are They Important?
2 min 20 sec
What is Triple Constraints Triangle in Project Management?
1 min 26 sec
Introduction to Certified Project Management Diploma | IPM
1 min 27 sec
Introduction to PMP Passport Course | IPM
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How Artificial Intelligence is Revolutionising Project Management
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How Artificial Intelligence is Revolutionising Project Management
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COO vs CPO: Key Differences Every Project Manager Should Know
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Why You Need a Project Management Office (PMO) for Success
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AI and Competitive Collaboration for Small Community-Based Nonprofits
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Project Leader vs Project Manager: What’s the Difference?
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What is Agile? Understanding Agile Methodologies and Frameworks
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Elizabeth Record’s Journey: How Project Management Skills Elevated Her Career
3 min 7 sec
The Power of Strategic Thinking in Project Execution
3 min 20 sec
How PMP Certification Opened New Doors for Yoana Pavlova
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Emotional Intelligence in Project Management: Key to Success
2 min 45 sec
Lean vs Six Sigma: Understanding the Differences and Benefits
2 min 35 sec
Trial vs Pilot: What’s the Difference?
2 min 14 sec
Understanding Leadership Styles for Effective Team Management
2 min 9 sec
Mastering the Project Plan A Step by Step Guide
2 min 13 sec
Reimagining Project Management: From Iron Triangle to the Pyramid of Paper Straw
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How to Manage Stakeholders Effectively in Projects
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The Power of Presence: Transitioning into Project Management with Leadership
1 min 54 sec
Elevate Your Impact with Power Skills
48 min 22 sec
Elevate Your Impact with Power Skills
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KPI and KGI: The Basics of Business Metrics
4 min 56 sec
How to Build Relationships as a Project Manager?
3 min 49 sec
Agile, Waterfall, and More: Discover the Best Methodology for Your Project
2 min 36 sec
Master the Statement of Work (SOW) for Project Success
1 min 37 sec
Five Ways to Include Your Team’s Introverts
2 min 57 sec
6 Effective Strategies for Managing Multiple Projects Simultaneously
2 min 13 sec
A Guide to Effective Scope Management
2 min 29 sec
The Digital Shift: Embracing Technological Change in Project Management
4 min 37 sec
Take Care of Your Words as a Project Manager
2 min 48 sec
Understanding the Waterfall Methodology: A Step-by-Step Guide
2 min 0 sec
Work Breakdown Structure: A Simple Guide for Project Managers
2 min 12 sec
How to Structure an AI Programme at Your Organisation
5 min 39 sec
How to Structure an AI Programme at Your Organisation
5 min 42 sec
About the Institute of Project Management
1 min 48 sec
From One Path to Another: Embracing Project Management
50 min 3 sec
3 Self-care Tips for More Productive Project Manager
1 min 19 sec
3 Project Management Trends Emerging in 2021
1 min 16 sec
3 Project Management Challenges and How to Overcome Them
1 min 21 sec
Certified Project Management Diploma
0 min 29 sec
Communication - The Key to Successful Project Management
1 min 2 sec
New Website of the Institute of Project Management
0 min 51 sec
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1 min 25 sec
Introduction to Strategic Project Programme Management Diploma | IPM
1 min 28 sec
Key Values of Project Management
1 min 1 sec
Agile Methodology: The Ultimate Guide | IPM
1 min 1 sec
Work Breakdown Structure (WBS) | IPM
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Statement of Work (SOW) | IPM
1 min 1 sec
Organisational Culture | What are the 4 types of organisational culture?
5 min 37 sec
Benefits of a Project Management Certification | IPM
0 min 44 sec
Institute of Project Management On-Demand Courses Introduction
1 min 17 sec
Introduction to PMP Simulator
2 min 5 sec
Stakeholder identification Methods | IPM
4 min 20 sec
Master The Art of Negotiation | IPM
2 min 52 sec
How to Master the Art of Leadership Behaviours
3 min 15 sec
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5 Stages of Project Life Cycle| Phases of Project Management Life Cycle
2 min 39 sec
What is sustainability in project management?
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Personal Development | How to be a good Leader
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What Makes Project Special ?
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Introduction to Strategic Project Programme Management Diploma | IPM
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8 Essential Qualities of Leadership
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Introduction to Certified Project Management Diploma | IPM
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Introduction to PMP Simulator
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What is the Waterfall Methodology?
1 min 31 sec
Work Breakdown Structure (WBS) | IPM
1 min 4 sec
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How to Manage Tasks Effectively
48 min 32 sec
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How to Lead Without Authority
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Using the Ludic to Define a Strategic Plan
1 min 24 sec
Managing Remote Teams and Using AI in Project Management Effectively
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How to Manage Resistance to Change in the Workplace?
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The Green Income Diversification Creativity Model (GIDC)
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The Difference Communication Makes in Projects
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Smoke Jumping Into Risk Projects
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Making Effective Decisions under Stakeholder Pressure in Projects
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Evolving Project Management: Sustainability Integration and Humanities' Role in AI-Driven Futures
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Project Management Essentials for Students
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Mastering Risk Management
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The Power of Communication in Project Management
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Lean Project Management: A Proactive Approach to Revolutionise Construction Project Delivery
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Emotional Intelligence in Project Teams: The Catalyst for Success
3 min 4 sec
From Deliverables to Impact: Mastering the Art of Outcomes in Project Management
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5 Steps to Influence and Inspire as a Project Manager
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Mastering Stakeholder Engagement: The Key to Project Success
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What is a Project Life Cycle?
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The Power of a Project Charter: How to Create One
1 min 35 sec
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