Combine Multiple CSV Files into One - Free, Fast & Secure
Select multiple CSV files or drag and drop them here
CSV merging is the process of combining multiple CSV (Comma-Separated Values) files into a single unified file. This is essential when you have data distributed across multiple files that need to be consolidated for analysis, reporting, or database imports. Our free CSV merger tool simplifies this process by automatically handling headers, duplicates, and file organization.
Merge as many CSV files as you need in a single operation.
Automatically detect and remove duplicate headers from merged files.
All processing happens in your browser. Your files never leave your device.
Optionally add a column to track which file each row came from.
Preview the merged result before downloading the final file.
No registration, no limits, no fees. Merge unlimited CSV files.
Merging CSV files is a common task in data management and offers numerous benefits:
Our CSV merger tool is perfect for various scenarios:
Keep header from first file: Uses the column headers from your first CSV file in the merged result.
Remove duplicate headers: Automatically removes header rows from all files except the first one to avoid duplicate headers in the merged file.
Add source filename column: Adds a new column showing which original file each row came from, useful for tracking data origin.
Convert between formats and optimize text content