Clinical trial participant flow
Illustrative participant counts from screening through trial follow-up.
Related reference: CONSORT 2025
Sankey Diagram Generator
FigranA Sankey diagram generator for source, target and value tables, with node-balance checks and editable SVG export.
- Paste or edit data
- Check flow balance
- Free SVG & 300 DPI PNG
| Source | Target | Value | Remove row |
|---|---|---|---|
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value | |
| Source | Target | Value |
Flow preview
Node balance
| Node | Incoming | Outgoing | Difference | Status |
|---|---|---|---|---|
| Assessed | 0 | 180 | -180 | Source or sink |
| Randomised | 120 | 120 | 0 | Balanced |
| Excluded | 60 | 0 | 60 | Source or sink |
| Arm A | 60 | 60 | 0 | Balanced |
| Arm B | 60 | 60 | 0 | Balanced |
| Completed A | 54 | 0 | 54 | Source or sink |
| Withdrawn A | 6 | 0 | 6 | Source or sink |
| Completed B | 55 | 0 | 55 | Source or sink |
| Withdrawn B | 5 | 0 | 5 | Source or sink |
Sankey diagram examples for research and reporting
Material recovery
Illustrative material input split into product, recovery and waste.
Related reference: US EPA
Sequencing reads
Illustrative sequencing reads split by alignment and mapping outcome.
Related reference: Li et al., 2009
Student choices
Illustrative student choices across two fields of study.
Related reference: Eurostat, educ_uoe_enrt03
Transfer difference
Illustrative liquid transfer with an unexplained 10 mL difference.
Related reference: NISTIR 7383
How to make a Sankey diagram
Source Target Value Assessed Randomised 120 Assessed Excluded 60 1Enter source, target and value
Enter one source, target and positive value per row, or import a table.
DifferenceSource Incoming Outgoing Difference B 100 90 10 2Check flows and node differences
Review incoming and outgoing totals without adding balancing flows.
- 300 DPI PNGSVGCSV
3Adjust the figure and download
Choose the figure size and download an editable SVG or 300 DPI PNG.
Balanced and unbalanced Sankey nodes
Compare the incoming and outgoing totals at an intermediate node. A difference may reflect loss, accumulation, missing data or a different reporting boundary; inspect the source data before interpreting it.
Balanced transfer
100 mL enters and 100 mL leaves; the difference is zero.
| Node | Incoming | Outgoing | Difference |
|---|---|---|---|
| Transferred | 100 | 100 | 0 |
Unbalanced transfer
100 mL enters and 90 mL leaves; the difference is 10 mL.
| Node | Incoming | Outgoing | Difference |
|---|---|---|---|
| Transferred | 100 | 90 | 10 |
Sankey diagram FAQ
What input format can I use?
Enter rows directly or paste or upload CSV or TSV with source, target and value columns.
What does band width mean?
All bands use one common scale: a flow twice as large is twice as wide.
Can I use missing or zero values?
Each value must be a finite positive number. Correct missing, zero or negative values before drawing.
Can flows form a loop?
This version supports directed acyclic flows. Self-links and cycles are reported for correction.
How are duplicate links and names handled?
Duplicate source–target links are rejected. Labels match exactly after trimming surrounding whitespace; use distinct names for different stages.
What if a node is not balanced?
The balance table and SVG description report the difference. No balancing flow is added.
Can I edit the exported figure?
SVG is a vector file that can be edited in compatible software. PNG is a 300 DPI raster image.
Is my data uploaded?
The diagram is processed locally in your browser. A draft may be saved in browser storage on this device.
Can I make an energy Sankey diagram?
Yes. Supply positive energy flows in one unit, such as kWh, for the same reporting period. Enter measured or externally calculated values; this tool does not calculate energy use or invent missing losses.
Make a Sankey diagram from your own data
Turn your own flow data into a clear diagram.
Go to the editor