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Automatically Builds Sankey Diagrams!

SankeyBuilder! Quick Setup. Total Control!

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Automatic Node Value Placement!

Values that don't fit in a Node, move outside and into the Node text!

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It's New! Animated Paths!

Over 50 Animation Types to Highlight Areas of Interest!

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Sankey Node Lock!

Move Nodes Anywhere! Lock! Save! Automatic Load!

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Create Exit Paths!

Extend Paths Above, Below, Left, Right or Anywhere!

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Add Clarity to Complex Diagrams!

Adjust the Path's Scale!

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It's New! Take Control of the Curve!

Create a 3D Look with the new Curvature Control!

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Horizontal or Vertical Diagrams!

Your choice of diagram orientation!

Did you know...

SankeyBuilder is the only tool that creates Sankey diagrams automatically...upload your file and it scans each column of data and lays out the diagram! It will even detect a column of data with numeric values, and set that as the weight of the paths/links, you see in the Sankey diagram!

Some of SankeyBuilder's Exclusive features...Automatic Paging of large data sets with sit back and relax playback, the abiltiy to move Nodes and then Lock them into place...we call this Node Lock...SankeyTrend which allows you to include multiple values allowing you to playback Time Slots or even Pause and Resume Time! And of course you can make copies of a diagrams to create slightly different views from the same data. Like the look of a diagram? Refresh the values with our Update feature! Oh and then there is the drag & drop fields that allow you to change the data relationships on the fly.

Looking to style your Sankey diagram...sure...we have you covered! Adds Arrows to paths, color paths/links or even Nodes! Change the size of the font, adjust the scale of paths to make complex paths stand out, and even adjust Node spacing or width, and even animate paths to highlight areas of interest! Need a larger workspace, try our new Top adjustment.

Now you can do everything!

Try It! It's Free!

All we need is your email address. Instructions sent to your inbox.




  • 3 Diagrams!
  • 3 Fields Per Diagram!
  • 1 Value Per Diagram



Per Month
  • 3 Diagrams!
  • 4 Fields Per Diagram!
  • Modify
    Field Layout and Value Fields!
  • Admin Account!
    Add or Remove Diagrams!



Per Month
  • Unlimited Diagrams!
  • Unlimited Fields Per Diagram!
  • Modify
    Field Layout and Value Fields!
  • Admin Account!
    Add or Remove Diagrams!

Frequently asked questions

We have included the most common answers to questions we have recieved at SankeyBuilder. If you still have an unanswered question please try our Contact Us form at the bottom of this page.

Top Questions

Enter you email in the Email Address input box and click the Signup button. We will setup a Free plan for the entered email address and send you a 'welcome' email. Simply click or tap the login url to get started in the welcome email. If you like SankeyBuilder, select a paid plan, make payment and we will link the 'free' account to the appropriate paid plan and send you a Username and Password to enable the Admin functionality of the Paid Plan.

You can upload your own data to support 3 diagrams (three files) to try SankeyBuilder. SankeyBuilder automatically picks up to 3 fields from your data and 1 value. The tab to modify the selection of the fields and value are disabled until you upgrade to a Paid plan.

The other limitation is the number of records it will display in the tool; which is limited to 10; however the paging bar is enabled allowing you to load 10 records at a time into a diagram. Other than that, everything else is enabled.

Upgrade to a paid plan to remove those limits and enable the Admin functionality that allows you Add or Remove diagrams, select additional Fields and Values, load more than 10 records into a diagram, create additional Exit Paths and create Offline diagrams.
We recommend Google Chrome, FireFox or Opera browsers. Currently they are the only browsers that support the full SVG spec and thus support all SankeyBuilder features. Internet Explorer and Microsoft Edge will work; however they do not support SVG Markers/Arrows, and when applied to the diagram, odd things occur. In short go with Chrome, FireFox or Opera.
SankeyBuilder requires quite a bit of web server muscle to create the data relationships and paging functionality you see in a diagram; however we recently integrated SankeyBuilder technology into an Energy system for a multi-billion dollar company. If you are interested in the integration of SankeyBuilder technology on your own web server, please fill in the Contact Us form on this page, submit it, and we will be in touch.

Option: Our SankeyBuilder *Offline feature allows you to download a setup package. Files in that package allow you to load a Sankey diagram with most of it's online interactive features into a Web Browser on virtually any personal computer or mobile device. This allows the diagram to run behind a corporate firewall/intranet. Click here and scroll down to the Offline section to learn more.

*Requires Google Chrome...In most cases it works well; however there is no guarantee it will work. If it works with the Free Plan you are good to go!
Typically you would include one value which adjusts the weight of bands in the diagram. This helps you identify the important results very quickly. Now imagine if you had 52 weeks of revenue in your results, a column for each week. Depending on which plan you have, you could select those 52 values and our SankeyTrend feature will allow you to playback those results, one at a time! Optionally Pause and Resume, or navigate backwards or forward in time!

SankeyBuilder includes tools that allow you to select paths by Node Name and Value. Paths can be extended and moved above or below a diagram with an arrow pointing in virtually any direction via Flex & Travel sliders.

Typically Exit Paths are curved and indicate the direction of an output. For example you could group several Exit Paths and line them up to point to the Source or Target, above or below the diagram. In addition to creating Exit Paths, you can duplicate the Source or Taget Node Name text and anchor it near the tip of the Exit Path! You can even modify an existing Exit Path in a future load of the diagram, copy and update them!

Exit Paths are saved with the diagram, and can be restored on a future visit. These diagrams can also be Shared via a unique URL we provide that puts the diagram into read-only mode so users can interact with the diagram, without having the ability to modify it!
Paid plans come with one Admin account. The Admin can distribute a Login URL to other users; which allows them to create Sankey diagrams on there behalf. Assistants have limited rights...only the Admin can remove a diagram with a SankeyBuilder Username and Password.

No we do not offer refunds...We feel that once you try the Free account, that should have given you plenty of time to try SankeyBuilder, and to make your executive decision.

To cancel a paid plan, cancel it with PayPal before the term expiration date and we will downgrade your account to a Free plan.

Contact us

What's on your mind? Have a question, request or feedback? Please fill in the form below, click Send, and we will respond in 24 hours or less.