How to Compare Files
- 1Upload two CSV files to compare
- 2Files are compared row by row
- 3Download report showing unique rows in each file
Compare Two CSV Files - Find Differences Online Free
Compare two CSV files and find differences. Free CSV comparison tool. Identify missing rows, new entries, and changes. 100% private processing.
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Compare Files
Find rows that are different (or matching) between two files.
Upload your files
Drag & drop or click to browse
Max 2 file(s).csv
Why Use This Tool?
- ✓Side-by-Side Comparison - See differences clearly
- ✓Find Missing Data - Identify rows in one file but not the other
- ✓Data Validation - Verify file synchronization
- ✓Fast Processing - Compare thousands of rows instantly
- ✓Privacy First - All processing in your browser
Frequently Asked Questions
How does the comparison work?
The tool compares entire rows. If a row exists in File A but not File B, it's flagged as unique to File A.
What if column order is different?
Files should have matching column structures. Reorder columns first using the Column Manager if needed.
Can it show changed values?
Currently, it shows unique rows only. Value-level comparison (showing what changed in each cell) is planned for future updates.