Treemap Diagram Maker
Visualize proportions and hierarchies at a glance.
Transform complex hierarchical data into beautiful treemap diagrams. See exactly how parts relate to the whole — by size, category, and color — in seconds.
Everything You Need in a Treemap Maker
Powerful controls, zero complexity — built for clarity.
Proportional Rectangle Sizing
Each block is automatically sized to reflect its value, so viewers grasp proportions without reading every number.
Custom Colors Per Category
Assign distinct colors to each segment to make categories instantly recognizable across your treemap diagram.
Flexible Label Options
Show name, value, or both — and control label position (top, center, bottom) to keep your treemap readable at any size.
Adjustable Aspect Ratio
Resize your treemap to fit widescreen dashboards, square social posts, or portrait reports without losing layout quality.
Stroke and Gap Controls
Fine-tune border width and rounded gaps between rectangles so your treemap looks polished and professional.
AI-Powered Generation
Describe your data in plain language and the AI treemap diagram maker structures, colors, and labels everything for you.
Bring Your Data, Any Way You Have It
Type It In
Enter category names and values directly into the table — your treemap updates live as you type.
Paste From Spreadsheet
Copy rows from Excel or Google Sheets and paste them straight into the treemap maker.
Upload a File
Import CSV or Excel files to populate your treemap diagram automatically (Pro).
Describe With AI
Tell the AI what you want to visualize and it generates a ready-made treemap diagram for you.
Share Your Treemap Anywhere
Download as PNG or SVG
Export high-resolution treemap images ready for slides, reports, and social media.
Share a Link
Get a shareable URL so colleagues or clients can view your treemap diagram instantly.
Embed on Your Site
Add a live treemap to any webpage with a simple embed code (Plus and above).
Use in Presentations
Drop your treemap PNG directly into PowerPoint, Google Slides, or Keynote.
About MakeCharts Treemap Maker
MakeCharts is a free online chart maker built for speed and clarity. The treemap diagram maker lets anyone turn proportional data into a professional visual in minutes. No installation, no design skills, no waiting.
- ✓50+ chart types including treemap, sankey, mind map, and more
- ✓AI-powered chart generation from plain-language descriptions
- ✓Live preview as you edit data, colors, and layout
- ✓High-resolution PNG and SVG export for any use case
- ✓Shareable links and embed codes for easy distribution
- ✓Free to start — upgrade for more AI credits and advanced features
By the Numbers
How to Make a Treemap Diagram
From raw numbers to a finished treemap in three simple steps.
Add Your Data
Type or paste your categories and values into the data table, or describe what you want to the AI.
e.g. Technology: 40, Healthcare: 25, Finance: 20, Energy: 15
Customize the Layout
Choose label content, position, colors, aspect ratio, and stroke settings to match your brand or presentation style.
e.g. Show 'Name + value' labels centered, with rounded corners and a dark stroke
Export and Share
Download your treemap as a PNG or SVG, copy a shareable link, or embed it on your website.
e.g. Download PNG for a quarterly business review deck
Who Uses a Treemap Diagram Maker?
Any time proportional or hierarchical data needs to be communicated visually.
Portfolio and Budget Visualization
Show how capital is allocated across sectors, departments, or cost centers so stakeholders grasp distribution instantly.
Codebase and Disk Usage Analysis
Map file sizes, module dependencies, or resource consumption to spot bottlenecks and oversized components at a glance.
Traffic and Channel Performance
Visualize website traffic sources, ad spend, or content performance so teams quickly see which channels drive the most value.
Data Exploration and Reporting
Present survey results, census data, or research findings in a treemap that makes relative sizes immediately clear.
Templates
Start with professionally designed templates
AI Treemap Maker vs. Manual Tools
See why teams switch to MakeCharts for treemap diagrams.
Spreadsheets and Design Tools
- ✗Manually calculate rectangle sizes and proportions
- ✗Hours spent in layout tools like Illustrator or Figma
- ✗Updating data means rebuilding the diagram from scratch
- ✗Inconsistent colors and fonts across versions
- ✗Hard to share or embed without exporting every time
- ✗No AI assistance for labeling or color suggestions
MakeCharts Treemap Diagram Maker
- ✓Auto-sizes rectangles from your data instantly
- ✓Professional treemap ready in under 2 minutes
- ✓Edit values and see the diagram update live
- ✓Consistent colors, fonts, and branding in every export
- ✓Share via link or embed with one click
- ✓AI generates and refines your treemap from plain language
Frequently Asked Questions
What is a treemap diagram maker?
A treemap diagram maker is an online tool that converts hierarchical or proportional data into a grid of sized rectangles. Each rectangle represents a category — its area shows its value relative to the total. MakeCharts automates the layout, sizing, and coloring so you can focus on the story your data tells.
How do I create a treemap diagram online for free?
Open MakeCharts, select the Treemap chart type, and enter your category names and values. The treemap diagram updates live as you type. No account is required to start, and you can download your finished diagram for free.
Can I use AI to generate a treemap?
Yes. Describe your data in plain language — for example, 'show market share by region with Europe at 45%, North America at 30%, Asia at 25%' — and the AI treemap generator builds a ready-made chart. You can then refine colors, labels, and layout from the config panel.
What data formats work with the treemap maker?
You can type values directly, paste rows from a spreadsheet, or (on Pro) upload a CSV or Excel file. The tool maps your data to the treemap automatically. For AI-assisted creation, just describe what you want in a sentence.
How is a treemap different from a pie chart?
Both show proportions of a whole, but a treemap uses nested rectangles instead of circular slices. Treemaps handle many more categories without becoming cluttered, and they can represent hierarchical data (parent and child groups) that a pie chart cannot.
Built for Everyone
- ✓No design or data science experience needed — intuitive controls guide you step by step
- ✓Works on any device — desktop, tablet, or mobile browser
- ✓Available in 12+ languages so your whole team can use it
- ✓Free plan includes all treemap features with no expiration
- ✓AI assistance lowers the barrier for users who are new to data visualization
- ✓Simple enough for students, powerful enough for analysts and executives
Your Data, Your Control
- •Your chart data is used only to render your treemap — not shared with third parties
- •We do not sell your data or use it for advertising
- •You decide what to share — diagrams are private by default
- •Download your charts or delete your account at any time
- •AI prompts are processed securely and not stored for model training
- •No unnecessary data collection — we ask only for what the tool needs
Ready to Build Your Treemap?
Create a professional treemap diagram in under 2 minutes — free, no sign-up needed.