Loona Venn Diagram Maker — Free 2 & 3 Circle Venn Diagrams
From classroom sets to audience overlap, the Venn is the fastest way to show "both", "only A" and "only B". Name your circles, add your numbers, download.
How to use the Venn Diagram Maker
- Type your labels and numbers into the grid, or paste CSV into the box below the chart and press Apply CSV.
- Adjust the title, legend and per-series colours until the chart reads clearly at a glance.
- Press Download chart as PNG and drop the image into your document, slides or post. Use Copy my data as CSV to save your figures for later.
How it works
Circles are drawn at equal size with fixed overlaps — in this maker the geometry is illustrative, and your labels and values carry the facts. Two rows give a two-circle Venn; three rows give the classic three-circle version. The chart is drawn by hand on an HTML canvas by Loona’s shared chart engine — no chart library and no server. Everything is computed locally, so your numbers never leave your device.
Worked example
A teacher shows 24 footballers, 19 cricketers and the overlap of multi-sport students. The three-circle PNG anchors the classroom display.
Frequently Asked Questions
Are the circle areas proportional to my values?
No — sizes are fixed for clarity and your printed values carry the numbers. This honesty note is also shown under the chart itself.
How do I get two circles instead of three?
Use two rows (delete the third with Remove row).
Where do I write the overlap value?
As the third row in the three-circle version, labelled as you like — for example "Both".
Is it free?
Yes — free, private, watermark-free.