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 Excel files into one workbook

Merge several Excel files into one workbook, each as its own sheet. Formatting and pictures stay, and a file with one sheet gives the sheet its file name. Your file is processed inside this browser and never uploaded.

Workbook 1

Choose several .xlsx or .xlsm files to process them all at once

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