FileToastSplit CSV
Split a CSV into smaller files, preserving its header in each file.
How to use Split CSV
- Choose a file (CSV / TSV) from your device.
- Set data rows per file.
- Run the tool, inspect the result, and download your output.
What this tool does
Split a CSV into smaller files, preserving its header in each file. Your original files are unchanged. Keep a copy and check the downloaded result before relying on it.
Questions about Split CSV
Are my files uploaded?
This tool processes files in your browser. File contents are not uploaded to FileToast. Downloads stay wherever you save them.
Will each CSV part include its header?
Yes. The header is retained in each smaller file so the parts can be used independently.
What is the download format?
The smaller CSV files are collected into one ZIP download. Extract it to access each part.
What are the file and processing limits?
Up to 50 MB per file. Large or complex files can exceed your device’s or the converter’s capacity.