Venn Diagram Calculator

Calculate overlap, unique values, and the union of two sets.

Last updated: June 2026 | By Patchwork Team

Set A size

Set B size

Intersection

Calculation steps

Start with the sizes of A and B.

Remove the overlap once from the total.

Use the remaining counts to find each region.

Set regions

Results shown below

Only A

Only B

Intersection

Union

What Does A Venn Diagram Show?

A Venn diagram shows how two sets overlap and how much is unique to each set.

The calculator rejects impossible overlaps.

No. The overlap is counted once in the union.

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