Free Visual Tool

Sankey Diagram Maker

1¢/use

Create beautiful flow diagrams to visualize budgets, energy flows, marketing funnels, and more. Enter your data, customize the style, and download as SVG or PNG.

Flow Data

Presets

18
20
0.45

What is a Sankey Diagram?

A Sankey diagram is a type of flow diagram where the width of each link is proportional to the quantity it represents. They are commonly used to visualize energy transfers, financial budgets, material flows, and process workflows.

Common Use Cases

How to Use This Tool

Enter your flow data in the text area using the simple syntax: Source → Target [Value]. Each line represents one flow. Use the presets to get started quickly, then customize colors, node width, padding, and link opacity to match your needs.

Tips for Great Sankey Diagrams

Keep your diagram readable by limiting it to 15-20 nodes. Use consistent naming and ensure flows are logically ordered. Choose a color scheme that provides enough contrast between different flow paths.