Sankey Diagram Generator
Visualize flow data with Sankey diagrams.
Use this free online Sankey Diagram Generator to create flow diagrams showing values moving between categories or lifecycle stages. It is helpful for demos, seed data, classroom examples, QA fixtures, and lightweight content drafts that need placeholder output. The form focuses on Flow Data (Source, Target, Value), Preview and returns a result you can copy, compare, or share, so you can move from input to answer without setting up a spreadsheet or custom script. Run one realistic example, adjust the inputs, and compare how the result changes before you copy or share it. Generated values are best for testing and drafting; do not treat placeholder names, addresses, or strings as verified real-world data.