How to Compare Two CSV Files
Compare CSV files to find added, removed, and common rows. Works with any CSV structure and lets you pick specific columns.
Why Compare CSV Files?
Data Auditing
Verify data changes between exports from different dates or systems.
List Reconciliation
Find items present in one dataset but missing from another.
Deduplication
Identify overlapping records across multiple CSV files.
Migration Validation
Confirm all records transferred correctly after data migration.
Steps to Compare CSV Files
Upload Your CSV Files
Click the "Upload File" button on each input panel to select a CSV file. You can also drag and drop files directly onto the input areas. When you upload a multi-column CSV, a column selector dropdown appears automatically — pick the column you want to compare.
Select the Right Column
For multi-column CSVs, use the column selector dropdown to pick which column to compare. This lets you compare specific fields like email addresses, IDs, or product names from within larger datasets.
Run the Comparison
Click "Compare Lists" to get instant results. The tool will show you items only in file A, only in file B, and items present in both files. Statistics and a Venn diagram give you a quick overview.
Export the Results
Export individual categories as CSV or TXT, or use "Full Report" to download everything in a single categorized CSV file. You can also copy results directly to your clipboard.
Supported File Formats
Comma-Separated Values
Standard CSV with header detection and column selection.
Tab-Separated Values
Auto-detected tab-delimited files with column support.
Plain Text
One item per line, or comma/semicolon/tab separated.