Free Venn Diagram Maker, Animated and Embeddable
- What this is
- A free, embeddable, animated Venn diagram for any website.
- Who uses it
- Teachers, science bloggers, marketing writers, data journalists, and anyone who needs to show set overlap visually in a web page or article.
- How to embed
- Copy one line of HTML. No signup. No watermark. Works in WordPress, Webflow, Ghost, Substack, plain HTML.
- File size
- ~25 KB per diagram.
- License
- Free forever. Editorial explainer text included; updated centrally over time.
- URL
- scrollchart.com/venn-diagram-maker
Animated Venn diagram
The diagram below is the actual embeddable component. Scroll to trigger the animation. The default labels show "Runners" and "Cyclists" as an illustration; customize the labels and values in the embed code.
What is a Venn diagram?
A Venn diagram is a visual representation of set relationships using overlapping circles. Each circle represents a set (a group of items with a shared property). The area where two circles overlap represents items that belong to both sets simultaneously. The non-overlapping areas represent items that belong to only one set.
John Venn introduced the diagram in his 1880 paper "On the Diagrammatic and Mechanical Representation of Propositions and Reasonings" in The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science. The term "Venn diagram" entered common use in mathematics and logic education by the early 20th century.
The two-circle Venn diagram
The two-circle (two-set) Venn diagram is the most common form. It creates three regions:
- Left crescent (A only): elements that belong to set A but not set B
- Center overlap (A and B): elements that belong to both sets. In set notation: A ∩ B
- Right crescent (B only): elements that belong to set B but not set A
Common uses include: comparing two research cohorts, illustrating shared skills between two job roles, showing the overlap between two audience segments, or demonstrating the logical relationship between two concepts.
The three-circle Venn diagram
Three circles create seven regions: three individual areas (A only, B only, C only), three pairwise intersections (A and B, A and C, B and C), and one triple intersection (A and B and C). This allows representation of more complex relationships but requires careful labeling to remain readable.
Three-circle diagrams are common in educational contexts (comparing the features of three historical periods, three literary works, or three scientific theories) and in strategy (showing where company capabilities, market need, and competitive gap all overlap).
Reading the overlap: what does it mean?
The overlap area (the intersection) contains items that satisfy all the criteria of both sets. The size of the overlap relative to the total circles communicates how much the two sets share. A large overlap suggests high similarity; a small overlap suggests the sets are mostly distinct; no overlap (disjoint circles) means the two sets share no elements.
In the animated Venn diagram above, the default example shows "Runners" (320 people) and "Cyclists" (280 people) with 90 people in the overlap, meaning 90 people do both. The visual makes this relationship immediately legible without reading any numbers.
How to read a Venn diagram vs an Euler diagram
Many "Venn diagrams" you see in textbooks and articles are technically Euler diagrams. The distinction: a Venn diagram always shows all possible intersections, even empty ones. An Euler diagram omits empty regions. When circles have no overlap in a real-world scenario, an Euler diagram separates them entirely rather than drawing them touching with an empty overlap area. For most practical purposes, the two terms are used interchangeably.
Free forever
The diagram and explainer text are served from scrollchart.com so the content can be updated over time to reflect new research or to link to relevant sources within the explainer. No subscription, no ads, no tracking pixels served to your readers.
Frequently asked
How do I make a Venn diagram for free?
Scrollchart provides a free animated Venn diagram you can embed in any website with one line of HTML. No signup, no design tool, no export. The diagram animates as the reader scrolls to it and includes a tabbed explainer panel. For a non-web context (a slide or a document), tools like Google Slides, PowerPoint, and Canva include Venn diagram shape libraries.
Can I add more than 3 circles to a Venn diagram?
In theory, yes. Mathematically, a Venn diagram can represent any number of sets. In practice, 4-circle Venn diagrams become difficult to draw and read because the 16 possible intersection regions cannot all be shown as connected areas in a symmetric layout. The standard alternatives for 4+ sets are Euler diagrams (which omit empty regions) or UpSet plots (which represent intersections as bars). The Scrollchart catalog includes the two-circle and three-circle Venn variants that cover the vast majority of real-world use cases.
How do I embed a Venn diagram in WordPress?
Paste the two-line HTML snippet into a Custom HTML block in the WordPress Gutenberg editor. The diagram loads from scrollchart.com and paints in as the reader scrolls to it. Alternatively, use the Scrollchart WordPress plugin (launching 2026) for a Gutenberg block with a live preview.
What is the difference between a Venn diagram and an Euler diagram?
A Venn diagram shows all possible intersections between sets, even empty ones. An Euler diagram shows only the intersections that actually exist in the data. A Venn diagram with two circles always has three regions (A only, B only, A and B); an Euler diagram might show just two circles with no overlap if A and B are disjoint. Most educational use of the term "Venn diagram" actually means an Euler diagram when the circles do not fully overlap.
What is the overlap region of a Venn diagram called?
The overlap region represents the intersection of the two sets, written as A ∩ B in set notation. It contains elements that belong to both A and B simultaneously. In a three-circle Venn diagram, there are four intersection regions: A ∩ B, A ∩ C, B ∩ C, and A ∩ B ∩ C (the center, where all three sets meet).
Can I customize the labels and numbers in the Venn diagram embed?
Yes. The Scrollchart Venn diagram accepts custom labels and counts as parameters in the embed code. You can set the name and size of each set, and the overlap count, directly in the HTML data attributes.
Can I make a Venn diagram in another language?
Yes. The Scrollchart Venn diagram maker, like the rest of the catalogue and the AI generator, supports every major language. Type your circle labels and headings in English, French, Spanish, German, Mandarin, Hindi, Arabic, Japanese, Portuguese, and more — the rendered SVG uses your language unchanged.
Browse all Venn diagram variants
Two-set, three-set, and more diagram types across the full Scrollchart catalog. All free, all embeddable.
See all Venn variants →More than Venn diagrams — explore the catalogue
Free AI chart generator
Paste your data, a finding, or a URL. The generator picks the right chart type and produces an animated, embeddable diagram in seconds.
Open the generator →100+ animated diagrams
Hand-built across 17 subjects: science, finance, fitness, law, engineering, and more. Filter by topic, copy one line of HTML, done.
Browse the catalogue →Now available in every major language: prompt in English, French, Spanish, German, Mandarin, Hindi, Arabic, Japanese, Portuguese, and more — the diagram labels render in the language you ask for.