Merge Excel Files
Combine multiple spreadsheets into a single Excel workbook.
Drag & drop your files here
or click to browse
XLSXCSV
Max 100MB per file · Up to 20 files
Supported Formats
XLSXLSXCSV
Merge Excel spreadsheets and CSV files online for free. Master Merge combines your workbooks into a single file, keeping each file's sheets organized. All processing happens locally in your browser using SheetJS technology.
1
Upload
Drag & drop or browse your files
2
Process
Files are processed in your browser
3
Download
Get your merged/converted file instantly