Free Sankey Diagram Maker Online
Unsaved
Free Sankey Diagram Maker Online
Visualize flow quantities, energy transfers, and resource allocation with Sankey diagrams.
What is a Sankey Diagram?
A Sankey diagram is a flow visualization where the width of arrows is proportional to the quantity of flow. They show how resources, energy, or materials move between nodes, with wider paths indicating larger quantities. Sankey diagrams are widely used in energy analysis, budget visualization, and supply chain mapping.
Common Use Cases
- •Energy flow analysis - Visualize energy production, distribution, and losses
- •Budget allocation - Show how money flows through an organization
- •Website traffic flow - Display user navigation paths and drop-offs
- •Supply chain mapping - Track material flow from source to destination
- •Conversion funnels - Visualize marketing or sales pipeline quantities
Syntax Quick Reference
| Element | Syntax | Description |
|---|---|---|
| Flow | Source,Target,Value | Define a flow between nodes |
| Quoted names | 'Node Name',Target,10 | Use quotes for names with spaces |
| Multiple flows | One per line | Each line defines a flow |
Export Options
PNG Export
High-resolution images for documents and presentations.
SVG Export
Scalable vectors for web and further editing.
PDF Export
Print-ready format for professional documentation.
Got Mermaid code from ChatGPT? Paste it here to render and export instantly.
Get the Free Mermaid Syntax Cheat Sheet
Free Mermaid Syntax Cheat Sheet
All 21 diagram types in one PDF reference.
Frequently Asked Questions
Ready to create your own sankey diagram?
Open the editor with this example pre-loaded and start customizing.