Excel Merger & Splitter
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All processing happens in your browser. Your files never leave your computer.
Built by MIT-trained engineerExcel Merger & Combiner
- Large files (>10MB) may be slow or fail to process in your browser.
- Only sheet data is merged/exported. Advanced Excel features (macros, formulas, charts, formatting) may not be preserved.
- All processing is done in your browser. Your files never leave your device.
Next-Level SaaS Tools — Launching Soon:
Next-Level SaaS Tools — Launching Soon:
About the Excel Merger & Splitter
The Excel Merger & Splitter combines multiple Excel files (or sheets) into one workbook, or splits a large workbook into separate files — whichever direction you need. It handles the tedious shuffling of spreadsheet data so you don’t have to copy and paste between tabs.
Spreadsheet data rarely arrives in one neat file. Monthly exports, per-region reports, and individual team submissions all need to be merged for analysis, or a giant master sheet needs to be split into manageable pieces to hand out. This tool does both without manual copy-paste errors.
All processing runs in your browser, so your spreadsheets never leave your device. That keeps financial figures, customer lists, and internal data private, with no upload, no account, and no third-party access.
How to use the Excel Merger & Splitter
- Upload the Excel file or files you want to merge or split.
- Choose whether you want to merge files together or split one apart.
- For merging, set the order and how sheets should combine; for splitting, choose how to divide the data.
- Run the operation to produce the combined or separated workbook.
- Download the resulting Excel file(s).
Common use cases
- Combining monthly or per-region exports into one master workbook.
- Merging several team submissions into a single sheet for analysis.
- Splitting a large workbook into separate files to distribute.
- Breaking one sheet into per-category files for different recipients.
Frequently asked questions
Can it merge multiple sheets into one?
Yes. You can combine data from multiple files or sheets, and the tool brings them together so you can work with everything in one place.
Will my formulas and formatting survive?
Cell values are preserved during merging and splitting. Very complex formulas that reference other files may need review, since their source context can change.
What file formats are supported?
Modern Excel files (.xlsx) are supported. Upload your workbooks and choose to merge or split as needed.
Is my data uploaded to a server?
No. Everything is processed in your browser, so your spreadsheet data never leaves your device.
How big a file can I process?
Because the work happens locally, the limit depends on your device’s memory. Typical business spreadsheets are handled comfortably.