Sankey thumbnail example 3 Sankey thumbnail example 2 Sankey thumbnail example 1

SankeyMATIC

A Sankey diagram builder for everyone

A Sankey diagram depicts flows of any kind, where the width of each flow pictured is based on its quantity.

Sankey diagrams are very good at showing particular kinds of complex information --

  • Where money came from & went to (budgets, contributions)
  • Flows of energy from source to destination
  • Flows of goods from place to place
  • ...and potentially many more.

Sankey diagrams can be difficult to produce without specialized software. SankeyMATIC aims to change that.

There are no tools to install. There is no code to write. You do not have to sign up for anything.

Just enter your data, customize the diagram to your liking, and download a finished product.


SankeyMATIC builds on the open source tool D3.js and its Sankey library, which are very powerful but require a fair amount of work & expertise to use.

SankeyMATIC unlocks the capabilities of the D3 Sankey tool for anyone to use.


Have you made an interesting diagram? Tell me about it! Tweet at @SankeyMATIC or send email to sbogart at this domain.

How SankeyMATIC works

1. Enter your data:


A diagram will appear:
Sankey starting example

2. Customize the diagram:

Sankey customization example 1 - labels, color Sankey customization example 2 - smaller, no labels
Sankey customization example 3 - wide, monospace font, no labels

3. Download your finished product as a high resolution graphic & use it on a website, in a slide deck, or in print.

Visit the Gallery to see several examples.
Read the Manual for more details.