DJToolsFree browser toolsMerge CSV
Merge Multiple CSV Files
Merge multiple CSV files by matching column names and download one result.
PRIVATE WORKSPACE
Merge CSV
Combine daily, branch, or system exports for further analysis.
The recommended settings are applied automatically.
HOW TO
How to use Merge CSV
Combine daily, branch, or system exports for further analysis.
- 1
Choose the CSV exports you want to combine, with headers in the first row of each file.
- 2
Process them and check the combined column names and row order.
- 3
Download the merged CSV and inspect any blank cells introduced by missing columns.
INPUT AND OUTPUT
Match column names across separate exports
Files with code,name and name,code headers can be combined without treating column position as identity. Columns found only in one input are included in the output, with blank cells for records that do not provide them.
Matching is based on header names. Different labels or capitalization can become different columns. Merge appends records and does not deduplicate them; use CSV Cleaner afterward if exact duplicate rows should be removed.
FAQ
Common questions
Are my files uploaded?+
No. This tool processes files in browser memory on your device.
Is the tool free?+
Yes. Core processing is free, requires no account, and adds no watermark.
Can the CSV files have columns in a different order?+
Yes. Records are aligned by header names, and the output includes the combined set of columns. Check missing values afterward.
Does merging remove duplicate records?+
No. It appends records from the selected files. Run the merged result through CSV Cleaner if exact duplicate rows should be removed.