How to use this office tool
- Choose a workbook and select the worksheet to split.
- Set the header row and desired number of parts.
- Create and download the ZIP containing the balanced XLSX files.
#236 · Merge Split & Organize Tool
Split Workbook into Equal Parts
Divide a selected worksheet into equal row-based parts and download the new XLSX files together in one ZIP archive.
Office File Tool
One workbookrow
groups
rows
Ad space
What this tool does
This splitter repeats the chosen header row in each part and distributes remaining rows as evenly as possible. It creates new workbooks rather than copying the original file.
Selected sheet rows ÷ part count → balanced XLSX files → ZIP archive
The final part may contain fewer rows when the data cannot divide evenly.
Supported formats
Files are processed locally. XLSX and XLS workbooks are read with SheetJS; CSV and TSV files are parsed with delimiter-aware handling. Advanced Excel features may not be preserved in generated files.
| Format | Support |
|---|---|
| XLSX / XLS | Read workbook values and formulas |
| CSV / TSV | Read delimited rows |
| Output | New downloadable file or report |
Tips for better results
- Work from a backup when the source workbook is important.
- Keep identifiers such as ZIP codes and account codes stored as text.
- Review the bounded preview and downloaded result before replacing any business workflow.
FAQ
How are rows divided when they do not split evenly?
The tool uses a balanced chunk size, so the last workbook may contain fewer data rows.
Will every split file contain the column headings?
Yes. The selected header row is copied into each generated workbook.
Can I split every worksheet at once?
This page splits the worksheet selected in the Sheet field. Run it again for another sheet.
Why is the download a ZIP file?
The ZIP keeps all generated XLSX parts together in a single browser download.
Are formulas recalculated in the split workbooks?
Formula text may be preserved, but the browser does not reproduce Excel's full calculation engine.
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Processing details
| Stage | Action |
|---|---|
| Input | One workbook |
| Privacy | Local browser processing |
| Result | New downloadable output |
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