Two Lists Unique Union

Combine two lists into a single deduplicated union set (mathematical union A ∪ B).

How It Works & Processing Standards

Combine two lists into a single deduplicated union set (mathematical union A ∪ B).

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Desktop max file size: 50MB
  • Mobile max file size: 20MB

Two Lists Unique Union is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Two Lists Unique Union

  1. 1
    Enter ListsPaste List A and List B into the input areas.
  2. 2
    Merge & DeduplicateCombine all entries and remove redundant values.
  3. 3
    Copy Unified ListExport the complete deduplicated union list.

Examples

Union of Invite Lists
Input: List A: Alice, Bob List B: Bob, Carol
Result: Union (A ∪ B): Alice, Bob, Carol (3 unique items)

Common Use Cases

  • Merging customer contact lists from two marketing campaigns without double entries
  • Consolidating supplier lists from different regional offices
  • Building a master tag or keyword dictionary from multiple documents

Frequently Asked Questions (FAQ)

Can the resulting union list be sorted?

Yes, you can sort the union alphabetically (A-Z) or keep original appearance order.

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