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What this CSV Split tool offers
Break large CSV files into manageable chunks based on rows per file.
- Preset or custom size: Use common presets or enter custom rows per file.
- Header in each output: Header row is repeated so every file remains usable.
- Filename prefix: Set a custom prefix for split files.
- Result summary: See total rows, number of files, and rows in each file.
- Download each file: Download each generated part individually.
- Private: No server upload required.
Why split CSV?
Splitting makes large datasets easier to import, share, and process in batches.
- Batch processing: Work with row-limited systems more easily.
- Smaller files: Share or review large datasets in parts.
CSV parsing and file chunk generation run entirely in your browser with no server upload; heavy split output updates are deferred to keep the interface responsive on larger datasets.
Options at a glance
- Rows per file: Preset sizes or custom value.
- Filename prefix: Output names like prefix_1.csv.
- Header handling: Header can be repeated in each split file.
Frequently asked questions
Is header repeated in each file?
Yes, when header is detected it is included in every split file.
Can I use custom filename prefix?
Yes. Files are named like prefix_1.csv, prefix_2.csv, and so on.
Can I set custom rows per file?
Yes. Use presets or enter any custom value.
Which delimiters are supported?
Auto, comma, semicolon, tab, and pipe.
Is processing private?
Yes. Everything runs locally in your browser.