CSV splitter
Large exports often hit an import limit somewhere downstream. This splits the file into chunks of the row count you choose, and repeats the header row in every chunk so each file imports cleanly on its own.
Choose your file
Drop your file here
CSV, TSV, TXT files. Nothing is uploaded — your file stays on this device.
Settings
Automatic detection is right almost always. Override it if columns come out wrong.
Leave this on so each output file imports cleanly on its own.
Add a file to continue.
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About CSV splitter
- What does CSV splitter do?
- Large exports often hit an import limit somewhere downstream. This splits the file into chunks of the row count you choose, and repeats the header row in every chunk so each file imports cleanly on its own.
- Who is it for?
- Analysts and operations teams moving data between systems, developers who need a quick format conversion, and anyone whose CSV keeps breaking when Excel opens it.
- Is it free?
- Yes. CSV splitter is free with no account, no watermark on your output, no daily cap and no trial period. Because it runs on your own device it costs us nothing to run, which is why there is no catch.
- Is it safe to use with confidential files?
- Yes, and not because we promise to behave. CSV splitter never sends your file anywhere — the work happens in your browser. There is no upload, so there is no copy of your document in our systems at any point.
- What file formats are supported?
- Input: CSV, TSV, TXT. Output: CSV.
How to use it
- 1
Add your file
Drag it onto the box above, or use Browse files. On a phone you can also take a photo or pick from your camera roll.
- 2
Check the settings
Sensible defaults are already chosen. Most people never need to change them.
- 3
Run it
The progress bar shows real progress, not a decorative animation. Everything happens on your device.
- 4
Preview the result
Look at the output before you download. If it is not right, adjust a setting and run it again — nothing has been saved anywhere.
- 5
Download
Save the file. Closing this tab discards it from memory, so download anything you want to keep.