Sankey Diagram Maker — Flow Visualization

Sankey Diagram Maker — Create Animated Sankey Diagrams

Visualize flows and transfers with animated Sankey diagram videos. Streams flow from source to destination, widths scale by volume, voiceover explains each path — then export as MP4. Free to start.

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Organic Paid Referral Homepage Product Blog Signup Bounce Purchase

Not just a static Sankey diagram — an animated video

Most Sankey diagram tools produce a flat image. Significant Figures produces an animated MP4 video where flows stream from source to destination, widths grow proportionally, and AI voiceover explains each path. Perfect for presenting user journeys, budget flows, and conversion funnels.

🎬 Animated Flows

Flows don’t just appear — streams animate from left to right, branching and merging with smooth motion. Width scales to volume.

🎙️ AI Voiceover

Auto-generated narration explains each flow. “60% of organic traffic lands on the homepage, with 40% converting to signup.” 20+ languages.

📊 Data-Driven

Upload a CSV with source, target, and value columns. Generate personalized Sankey diagrams for different segments or time periods.

🎨 Fully Customizable

Custom colors per node and flow, adjustable widths, node positions, and labels. Multi-level diagrams with unlimited nodes.

How to create an animated Sankey diagram

1

Define your flows

Enter source → target → value for each flow. Or upload a CSV with your flow data. Nodes auto-arrange by volume.

2

Customize the diagram

Set colors per node, adjust layout spacing, add labels and values. Enable AI voiceover for flow-by-flow narration.

3

Export as MP4

Render your animated Sankey diagram as a high-quality video. Download, share, or embed anywhere.

Create Your Sankey Diagram Free →

What people use Sankey diagrams for

💰

Budget Flows

Visualize where money comes from and where it goes — revenue to expenses

👤

User Journeys

Map how users flow through a website, app, or conversion funnel

🔄

Career Transitions

Show where graduates go, how employees move between departments

📈

Conversion Paths

Track lead sources through pipeline stages to closed deals

⚡

Energy Flows

Visualize energy production, distribution, and consumption patterns

📊

Supply Chains

Map material flows from suppliers through manufacturing to customers

More than a Sankey diagram maker

The Sankey diagram is one of 30+ animation primitives in Significant Figures — the personalized video platform. Combine Sankey diagrams with pie charts, bar charts, stat counters, and more to create complete data-driven videos. Add voiceover, branding, and deliver at scale.

Use it standalone to make a quick animated Sankey diagram, or use it in a template as part of a personalized video campaign — financial reports, analytics summaries, funnel reviews, and more.

Frequently asked questions

Is the Sankey diagram maker free?
Yes. The free tier includes 3 credits per month. The Sankey diagram builder and preview are completely free. You only need credits to export as MP4.
How many nodes and flows can I have?
No hard limit. The diagram auto-adjusts layout and spacing for any number of nodes and flows. Most effective with 5-20 nodes for video clarity.
Can I have multiple levels?
Yes. Sankey diagrams can have 2, 3, or more levels — showing flows through multiple stages like source → channel → page → action.
What data format do I need?
A simple three-column CSV: source, target, value. For example: “Organic, Homepage, 5000” means 5000 units flow from Organic to Homepage.
How is this different from a static Sankey tool?
Static tools produce images. Significant Figures produces animated MP4 videos where flows stream in real time, volumes scale proportionally, and narration guides the viewer through each path.

Ready to visualize the flow?

Create your animated Sankey diagram in minutes. Free to start, no credit card required.

Create Your Sankey Diagram →

Part of Significant Figures

This primitive powers personalized videos across the entire funnel

Use this alongside 80+ other animation primitives to build sales outreach, client onboarding, usage reports, proposals, and year-in-review videos.