Venn Diagram Maker
Paste one column of items per set to draw a two- or three-set Venn diagram. The number of items unique to each set and shared between them is counted automatically and shown in each region.
How it works
A Venn diagram shows how two or three sets overlap, using circles whose intersections represent shared members. Paste your data with one column per set: the first row holds the set names and each column below lists that set's items. The tool works out how many items are unique to each set, how many are shared between each pair, and — for three sets — how many belong to all three, then prints the count in the matching region.
Duplicate items within a column are ignored, and comparison is exact and case-sensitive, so tidy your lists first if needed. The diagram uses distinct translucent colours so overlaps are visible, and it adapts to light and dark themes. Two and three sets are supported; four or more sets cannot be drawn as a standard proportional Venn diagram.
Examples
- Two columns of items draw a two-circle Venn with the shared count in the middle.
- Three columns draw a three-circle Venn with all seven regions counted.
- Items listed in more than one column are counted in the overlap.
Frequently asked questions
- What data does a Venn diagram need?
- One column of items per set, with the set name in the first row. The tool compares the columns to count unique and shared items.
- How many sets can I use?
- Two or three. A standard Venn diagram with proportional overlapping circles only works cleanly for up to three sets; four or more need a different chart.
- Are the circles sized by set size?
- No — the circles use a fixed, evenly-overlapping layout, and the true counts are printed in each region. Area-proportional Venn diagrams are a harder, separate problem.
- Is the comparison case-sensitive?
- Yes. Items are matched exactly, so “Apple” and “apple” count as different. Duplicate items within one set are counted once.