Calculate output count
Divide data rows by rows per file and round up. Ten thousand rows at one thousand per file creates ten files.
Split Excel File by Rows
Split the first Excel worksheet into smaller XLSX files by a chosen row count. See batch calculations, repeated headers, output examples, and workbook limits.
How to use this tool
- Select one XLSX or XLS workbook.
- Enter the number of data rows per file.
- Start the split operation.
- Download every generated XLSX part.
- Check repeated headers, row ranges, and file count.
Split a large first worksheet into predictable batches. The first row is treated as a header and repeated in every output file. The tool splits by row count, not by category or column value.
Repeated header row
The first source row is copied into every generated part.
First worksheet only
Other worksheets and advanced workbook features are not included.
Before and after example
Before
- Original.xlsx → header + 10,000 data rows
After
- part-1.xlsx → header + rows 1–1000
- part-2.xlsx → header + rows 1001–2000
- … part-10.xlsx → header + rows 9001–10000
Troubleshooting
Wrong number of files
Confirm the data-row count and selected batch size.
Header is incorrect
The first source row is always treated as the header.
Only one worksheet was split
That is the current designed scope; process other worksheets separately.
Generation is slow
Use a larger batch size or reduce workbook complexity.
Frequently asked questions
Does each part include headers?
Yes. The first row is repeated.
Can every worksheet be split?
No. Only the first worksheet is processed.
Can it split by a column value?
No. It splits by a fixed number of rows.
How many files are created?
Data rows divided by rows per file, rounded up.
Is processing local?
Yes. It runs in the browser tab.
Are formulas preserved?
Advanced features must be verified; output focuses on table data.
Related spreadsheet tools
- Merge Excel Files — Combine spreadsheet files after batch processing.
- Keep Excel Sheets — Place worksheets in one output workbook.
- Excel to CSV — Export the first worksheet as UTF-8 CSV.