Proportional Rectangle Sizing
Each block is automatically sized to reflect its value, so viewers grasp proportions without reading every number.
Chart & Visualization Tools
Treemap Diagram Maker
Transform complex hierarchical data into beautiful treemap diagrams. See exactly how parts relate to the whole — by size, category, and color — in seconds.
Features
Everything You Need in a Treemap Maker
Powerful controls, zero complexity — built for clarity.
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.
Data input
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
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 available
<2 minTime to first treemap
12+Languages supported
NoneSign-up required
IncludedFree AI credits
Workflow
How to Make a Treemap Diagram
Add Your Data
Type or paste your categories and values into the data table, or describe what you want to the AI.
Customize the Layout
Choose label content, position, colors, aspect ratio, and stroke settings to match your brand or presentation style.
Export and Share
Download your treemap as a PNG or SVG, copy a shareable link, or embed it on your website.
Use cases
Who Uses a Treemap Diagram Maker?
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
Treemap Template for Proportional Datatreemap
Visualize proportional data with a free treemap template. Compare sectors, categories, or budgets at a glance. Customize and download instantly.
Budget Allocation Treemap TemplatetreemapVisualize department budget distribution with a color-coded treemap. Customize categories and values to match your organization's specific budget.
Website Analytics Treemap: Visualize Traffic by SectiontreemapVisualize page views by section with a website traffic hierarchy treemap. Instantly see which pages and sections drive the most traffic and performance.
Stock Portfolio Treemap — Visualize Asset AllocationtreemapVisualize your investment portfolio breakdown with a treemap. See asset allocation at a glance — free, fully customizable, and no sign-up needed to get started.
Visualize Disk Space Usage with a TreemaptreemapVisualize your storage breakdown instantly with this disk space treemap template. See which files and folders use the most space at a glance.
Visualize Company Headcount by DepartmenttreemapVisualize company headcount by department with a treemap. See employee distribution across Engineering, Sales, HR, and more at a glance. Free and customizable.
Related Tools
Create similar charts with these tools
AI Treemap Generatortreemap
Create clear treemap charts in minutes. Free, AI-powered tree map chart generator with labels, sorting, and export. Customize colors and layout. Try it now.
Treemap MakertreemapMake a treemap online in seconds. Turn hierarchical data into proportional visuals — free, no skills needed. Perfect for market share, budgets, and portfolios.
AI Treemap GeneratortreemapBuild beautiful treemap charts instantly with our free AI treemap generator. Turn hierarchical data into clear visuals in seconds - no design skills required.
Nested Treemap MakertreemapCreate stunning nested treemaps in seconds. Visualize hierarchical data with proportional rectangles. Free, no sign-up needed. Try our AI treemap maker now.
Comparison
AI Treemap Maker vs. Manual Tools
See why teams switch to MakeCharts for treemap diagrams.
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
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
FAQ
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.
Can I customize colors and labels in the treemap?
Yes. You can assign a custom color to each category, choose whether labels show the name, value, or both, and set label position to top, center, or bottom. You can also adjust stroke width, gap rounding, aspect ratio, and font size.
What file formats can I export my treemap diagram as?
Free users can download a high-resolution PNG. Starter and above plans also include SVG export for scalable, print-ready output. Plus and Pro plans add embed codes for adding live treemaps to any website.
Is there a free treemap chart maker available?
Yes. MakeCharts offers a completely free treemap chart maker with all customization options and PNG download — no sign-up required. Free accounts also include AI credits to try the AI-powered treemap generation.
Can I share my treemap diagram with others?
Yes. Once your treemap is ready, copy a shareable link and send it directly to colleagues or clients. They can view the diagram in their browser without needing an account. Embed codes are available on Plus and above for adding treemaps to websites.
What industries use treemap diagrams most?
Treemaps are popular in finance (portfolio allocation), technology (disk and bundle usage), marketing (channel performance), and research (data exploration). Any situation where you need to compare the relative size of many categories at once is a strong fit for a treemap.
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
Start now
Ready to Build Your Treemap?
Create a professional treemap diagram in under 2 minutes — free, no sign-up needed.
- Free treemap diagram maker
- AI-powered generation
- PNG and SVG export
- No account required
- Live preview as you edit
- Share or embed instantly
Describe your data or paste values — our AI builds the treemap diagram instantly.