SankeyGen is a free, browser-based tool for turning data into Sankey diagrams: budgets, funnels, energy flows, or any breakdown that moves through stages. No account required.

Type into the table, upload a CSV, or explore with sample data first.

You can use a Google Sheets / Excel template to transform your data into a compatible CSV.

Rename any node with inline label editing. Just double-click it on the diagram. Save your session to pick up where you left off, and export the finished diagram as a PNG image, a PowerPoint slide, or a swipeable Instagram carousel. Colors, fonts, labels, and layout are all adjustable.

Have a specific question? Check the FAQ.