Compare Two Lists
Enter your lists below, one item per line. After clicking "Check", you'll see items unique to List A, items common to both lists, and items unique to List B.
List A
0 items
List B
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Results
Only in A
0 items
In Both Lists
0 items
Only in B
0 items
All Items
0 items
How to Use the Free Online List Comparison Tool
Basic Usage
- Enter items in List A (one item per line)
- Enter items in List B (one item per line)
- Set comparison options if needed
- Click Check Lists to compare and find differences
Comparison Options
- Case Sensitive: When checked, "Item" and "item" are treated as different items
- Ignore Spaces: When checked, spaces are removed before comparing (e.g., "new item" becomes "newitem")
Understanding List Comparison Results
Only in A
Unique items found exclusively in List A
In Both Lists
Common items that appear in both List A and List B
Only in B
Unique items found exclusively in List B
Helpful Tips for List Comparison
- Use the Sort button to alphabetically arrange your lists for better organization
- The Copy button lets you copy a list to clipboard for use in other applications
- After comparison, use Copy Results to save any result section for your records
- Use Reset to clear all lists and start over with fresh data
- Empty lines are automatically ignored during comparison for cleaner results
- Compare CSV data, email lists, inventory items, or any text-based data with line breaks
- Try the Load Demo buttons to see how the tool works with example data
Privacy & Security: All processing happens entirely in your browser. Your data isn't sent to any server, ensuring complete privacy and security for your sensitive information.
Common Use Cases
- Comparing email subscribers across different mailing lists
- Finding overlap between two sets of product SKUs
- Identifying missing items between two inventories
- Comparing attendee lists from different events
- Matching student names across different class rosters
- Finding unique keywords between two SEO lists
- Comparing ingredient lists for recipe planning
- Identifying which tasks appear on multiple to-do lists