CSV Merger
Merge multiple CSV files into one
Drop your file here or click to upload
Supports CSV, TSV, TXT files up to 100MB
How to Use
- Upload multiple CSV files
- Drag to reorder if needed
- Choose merge method
- Download merged CSV
Features
- Vertical stack (append)
- Horizontal join by key
- Handle mismatched columns
- Drag to reorder files
Use Cases
- Combine monthly reports
- Join related datasets
- Consolidate split files
Frequently Asked Questions
Is CSV Merger free to use?
Yes, completely free with no limits. No signup or download required.
Is my data private when using CSV Merger?
Absolutely. All processing happens in your browser. Your data never leaves your device.
How are columns handled when merging?
You can stack CSVs with matching columns, or use union mode to combine all unique columns across files.