Sankey diagram maker

Click to upload or drag and drop

Accepts csv, parquet, tsv and json

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Create Sankey diagrams online

Create beautiful Sankey diagrams instantly with our online tool. Perfect for visualizing flows between nodes, such as energy flows, budget flows, or material flows. Upload your data and generate professional visualizations with customizable options.

Upload your data and create Sankey diagrams instantly

Customize node and link colors

Interactive tooltips show detailed flow information

Download your diagram as a high-quality PNG image

Mobile-friendly interface

No registration required

How to create a Sankey diagram

  1. Prepare your data
    Your data should have three columns: source nodes, target nodes, and values representing the flow between them.
  2. Upload your data
    Click the upload button and select your data file. We support CSV, Parquet, TSV, and JSON formats.
  3. Select columns
    Choose which columns represent your source nodes, target nodes, and flow values.
  4. Download your diagram
    Download your Sankey diagram as a PNG file.

Sankey diagram examples

Energy Flow Diagram

This example shows energy flow from different sources through various transformations to end uses.

Budget Flow Diagram

This example visualizes a company's revenue flow through different departments and cost centers.

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