Split Spreadsheet
Split one CSV or Excel worksheet into smaller CSV files, repeating the header in every file.
Explore the tool with example spreadsheet data before using your own file.
Limits: 50,000 data rows and 500,000 cells per result. Excel files: one selected worksheet per file. Only table values are exported.
Result preview
Preview shows up to 20 rows and 12 columns. Downloads contain the full result.
Protection prefixes formula-like cells with an apostrophe. This changes their exported text. XLSX results use text cells.
How to use this tool
- Choose your file and worksheet. The first row is treated as the header.
- Enter how many data rows each output file should contain.
- Review the batch count and download all parts in one ZIP file.
What to check
Output files contain values as CSV. Workbook formatting and formulas are not retained. Up to 100 output files can be created in one run.
Does this tool upload my files?
No. Processing happens in your browser. The tool does not send spreadsheet contents to Tech Tycoon or to an AI service. Your original file is unchanged.