The tool merges multiple Excel or CSV spreadsheets into a single workbook. The output is one XLSX file where rows from all source documents are collected on one sheet. If the columns in the tables differ, the program automatically creates a common expanded header so that no data is lost.
When this is useful
An accountant consolidates monthly expense reports from ten branches into one master file for a meeting. Each branch sends its own XLSX with a slightly different set of columns. Another case: a marketer exports advertising campaign results from different systems as CSV files and wants to build a single analytical table.
Step-by-step instructions
- Click the upload area and select from two to thirty-five files with XLSX, XLS, or CSV extensions.
- If needed, check the option 'Add source file name column' so the final table shows which file each row came from.
- Click the start processing button, wait for completion, and then download the resulting file.
How to verify the result
After downloading, open the final XLSX and check the total number of rows by comparing it with the sum of records in the source files. Make sure the merged header contains all expected titles, especially if the original tables had different structures. If you added a source column, verify the correctness of the file names in that column.
Important limitations
The service transfers only cell values, so all formulas, macros, and complex formatting will be lost. Final numbers that were calculation results in the originals must be verified manually. Empty rows from the source files also end up in the overall result, which may require additional cleanup.