87 free tools for Excel and CSV files.Your files are processed in this browser and never sent to a server, so there is nothing to install and no limit on how often you use them.

Merge CSV and Excel files

Stack several Excel or CSV files into one table, with columns lined up by header name and an optional column showing each row's file. Your files are processed inside this browser and never uploaded.

File 1

You can choose several files at once

Drop a file hereChoose file.xlsx / .xls / .ods / .csv, up to 20 MB