Private CSV file splitter
Split CSV Online
Break a large CSV into smaller files using an exact row limit, repeat the header automatically, and download every part in one ZIP.
Generated files
0
The header row is repeated in every file.
Your CSV is split locally and never uploaded.
How to use the CSV splitter
- STEP 1Paste CSV and enter the maximum data rows per output file.
- STEP 2Split the records and verify the generated file count.
- STEP 3Download every CSV part in one ZIP archive.
About this tool
Split oversized CSV datasets into predictable parts for upload limits, email attachments, batch processing, spreadsheet applications, and database imports.
The header row does not count toward the selected row limit and is included in every output file.
The parser understands quoted fields before splitting, preventing commas and line breaks inside a value from creating accidental rows.
Frequently asked questions
Does every split file include the CSV header?
Yes. The original header row is written at the top of every generated CSV file.
Will quoted commas be split incorrectly?
No. Commas and line breaks inside properly quoted fields are parsed as field content rather than record boundaries.
Where are the split files created?
They are created in browser memory and packaged into a ZIP locally. The CSV is not uploaded.