CSV Combiner Tool

Combine multiple CSV files into a single CSV or multi-sheet Excel workbook locally.

1. Upload CSV Files

Choose CSV Files

Waiting for CSV files...

2. Output Format

Option 1: Merge into Single CSV Option 2: Combine into Single Excel (.xlsx)

3. CSV Processing Options

Files include headers Skip empty rows Add filename column

Remove duplicate rows (exact match)

Loaded Files Summary

File Name	Size	Total Rows	Columns
No files uploaded yet.

Execution Log

Ready. Select CSV files to begin processing.

Note: This is a static web page that runs locally in your browser — no data is sent to any server. If preferred, you can also download it as an HTML file and run it offline or clone from Web-Tools (MIT License).