Critical Path Chart Maker
Map task dependencies and surface your project's critical path in seconds.
Our free PERT chart maker lets you enter optimistic, most-likely, and pessimistic durations for every task, then automatically calculates expected times and highlights the critical path.
Everything You Need in a PERT Chart Maker
Purpose-built controls for critical path analysis — not a generic drawing tool.
Three-Point Time Estimation
Enter optimistic, most-likely, and pessimistic durations for each task. The tool calculates the weighted expected time using the standard PERT formula automatically.
Automatic Critical Path Highlight
Toggle critical path highlighting and instantly see which sequence of tasks determines the minimum project duration, rendered in a distinct color.
Slack and Float Display
Show or hide task float values directly on each node so you can spot scheduling flexibility at a glance without manual calculation.
Early and Late Times
Display early-start, early-finish, late-start, and late-finish values per node to support detailed schedule risk analysis.
Flexible Dependency Mapping
Link any task to one or more predecessors to model complex project networks, including parallel tracks and merge points.
Customizable Appearance
Adjust node size, font size, spacing, arrow width, and colors for both critical and non-critical paths to match your brand or presentation style.
Add Your Project Data Your Way
Type Tasks Directly
Enter task names, time estimates, and dependencies right in the panel — no spreadsheet needed.
Paste From a Plan
Copy task lists from any project plan or schedule and paste them in to get started instantly.
Describe with AI
Tell the AI what your project involves and it will generate a complete PERT chart with realistic estimates.
Upload Files (Pro)
Import CSV or Excel task lists and let MakeCharts build the dependency network automatically.
Share Your Critical Path Diagram Anywhere
Download as PNG or SVG
Export a crisp, high-resolution PERT chart ready for presentations, status reports, or stakeholder decks.
Share a Link
Generate a shareable link so team members and clients can view the critical path diagram without any account.
Embed on Your Site
Paste a single embed snippet to display your live PERT chart inside any project portal or intranet page.
Add to Slides or Docs
Drop the exported image straight into PowerPoint, Google Slides, or Word without reformatting.
About This Critical Path Chart Maker
MakeCharts is a free online chart tool built for speed and clarity. The PERT chart maker combines standard critical path methodology with an AI layer that generates realistic project networks from plain descriptions. No installation, no templates to unlock, no design skills needed.
- ✓Three-point estimation with automatic PERT formula calculation
- ✓Real-time critical path highlighting and float display
- ✓AI generation from plain-language project descriptions
- ✓One-click PNG and SVG export for any presentation
- ✓Free with no sign-up — paid plans for more AI credits and file uploads
- ✓Part of a 50+ chart type library covering planning, flows, and analysis
By the Numbers
How to Make a Critical Path Chart
From blank canvas to finished PERT diagram in three simple steps.
Add Your Tasks
Type each task name and set its optimistic, most-likely, and pessimistic time estimates. Add optional notes for context.
Task: 'System Design' — O: 3 days, M: 5 days, P: 10 days → Expected: 5.5 days
Define Dependencies
Select which tasks each task depends on. The chart automatically arranges nodes and draws arrows to reflect the network logic.
'Development' depends on 'System Design' and 'Requirements Analysis'
Review the Critical Path
Enable critical path highlighting to see the longest path through your project. Check float values to find scheduling flexibility.
Critical path highlighted in red: Start → Requirements → Design → Development → Testing → End
Export and Share
Download your PERT chart as a PNG or SVG, share a link, or embed it directly in your project documentation.
Export a 2400×1600 PNG for your project kickoff presentation
Who Uses a Critical Path Chart Maker
PERT charts are used wherever precise scheduling and dependency tracking matter.
Sprint and Release Planning
Map development, testing, and deployment tasks with realistic time ranges to identify the critical path before a release date is committed.
Project Schedule Risk Analysis
Model construction phases, procurement lead times, and inspections to find the critical path and negotiate realistic completion dates with clients.
Launch Coordination
Sequence marketing deliverables, vendor tasks, and approval gates using a PERT chart to ensure no critical task slips before launch day.
Study and Thesis Scheduling
Plan research phases, data collection, analysis, and writing milestones with uncertainty built in via three-point estimates.
Templates
Start with professionally designed templates
Plan Projects Faster with a Professional pert-chart
This template visualizes task dependencies, expected durations, and the critical path for building and delivering a Word-based project template.
Blank pert-chart Template for Clear Project Scheduling
This pert-chart visualizes project tasks, dependencies, and estimated durations so you can plan timelines with more confidence.
PERT CPM Chart Template for Clearer Project Scheduling
This pert-chart visualizes project tasks, dependencies, estimated durations, and the critical path to help you plan delivery with confidence.
Plan Complex Timelines with a Professional pert-chart
This template visualizes project tasks, dependencies, expected durations, and the critical path in a clear schedule view.
View All Templates
Browse the full library to find more templates tailored to your chart.
AI Critical Path Chart Maker vs. Manual Methods
See why teams switch from drawing tools and spreadsheets to MakeCharts.
Manual Drawing Tools / Spreadsheets
- ✗Manually draw and reposition every node and arrow
- ✗Calculate expected times and float values by hand
- ✗Critical path requires separate analysis or plugin
- ✗Reformatting breaks when tasks are added or removed
- ✗No AI assistance to generate realistic task estimates
- ✗Exporting requires screenshots or add-on tools
MakeCharts Critical Path Chart Maker
- ✓Auto-layout positions nodes and draws dependency arrows
- ✓PERT formula calculates expected times instantly
- ✓One toggle highlights the critical path in real time
- ✓Add or remove tasks and the chart updates automatically
- ✓AI generates a full PERT chart from a plain-text description
- ✓Export PNG or SVG in one click, no extra tools needed
Critical Path Chart Maker — Frequently Asked Questions
What is a critical path chart?
A critical path chart (often called a PERT chart) is a network diagram that maps every project task and its dependencies. The critical path is the longest sequence of dependent tasks — it determines the shortest possible project duration. Any delay on a critical path task directly delays the project end date.
What is a PERT chart and how does it relate to critical path?
PERT (Program Evaluation and Review Technique) is a project scheduling method that uses three time estimates — optimistic, most-likely, and pessimistic — to calculate an expected task duration. Once expected times are set, the critical path is identified as the longest path through the PERT network, giving project managers a probabilistic view of schedule risk.
How do I use this critical path chart maker?
Add your tasks with their three-point time estimates, then define which tasks each one depends on. The tool calculates expected durations, draws the dependency network, and highlights the critical path automatically. You can also describe your project to the AI and receive a ready-made PERT chart in seconds.
Can I make a critical path chart for free?
Yes. MakeCharts lets you create, customize, and download PERT charts completely free with no sign-up required. Free accounts include a limited number of AI-assisted chart creations. Paid plans unlock more AI credits, file uploads, and advanced export options.
How does the PERT expected time formula work?
The standard PERT formula is: Expected Time = (Optimistic + 4 × Most Likely + Pessimistic) / 6. This weighted average gives the most-likely estimate four times the weight of the optimistic and pessimistic extremes, producing a realistic duration that accounts for uncertainty.
Built for Every Project Team
- ✓No project management certification required — controls use plain language
- ✓Works on any device, including tablets used on job sites
- ✓AI assistance for teams with no prior PERT chart experience
- ✓Interface available in 12+ languages
- ✓Free tier gives full access to all PERT chart features
- ✓Suitable for solo freelancers and large cross-functional teams alike
Your Project Data Stays Yours
- •Your task and schedule data is not sold to third parties
- •You control which charts are shared and with whom
- •Delete your account and your data at any time
- •Shared links can be revoked whenever you choose
- •No persistent tracking of project content beyond your session
Start Building Your Critical Path Chart
Map your project network, find the critical path, and share it with your team — in minutes.