CSV Splitter
Split a large CSV into evenly sized files, header repeated.
About CSV Splitter
Split a large CSV into evenly sized files, header repeated. CSV Splitter runs entirely in your browser, so your data never leaves your device and there is nothing to install — just paste your input and copy or download the result the moment it appears.
How to use CSV Splitter
- 1Paste or type your data into the input box above (a sample is pre-filled so you can try it instantly).
- 2Adjust any options on offer — delimiter, columns, formatting and so on — to match what you need.
- 3Processing happens instantly as you type; review the result in the output panel.
- 4Click Copy to grab the output or Download to save it as a file — CSV Splitter keeps everything on your device.
Why use CSV Splitter?
- ✓Gets the job done in one step with sensible defaults and instant results
- ✓Processes everything locally in the browser — fast and responsive even on large inputs
- ✓100% free with no sign-up, no watermark and no usage limits
- ✓Runs entirely in your browser — your data is never uploaded or stored
- ✓Works offline once loaded, with instant results and one-click copy or download
Frequently asked questions
What does CSV Splitter do?+
Split a large CSV into evenly sized files, header repeated. It all happens client-side in your browser, which keeps it fast and completely private.
Do I need to install anything or sign up?+
No — CSV Splitter works instantly in any modern browser with no account, no download and no usage limits.
Is it free to use?+
Yes — it is completely free with no sign-up, no account and no usage limits. There is no watermark and no paywall, so you can process as many files as you like.
Is my data private and secure?+
Yes. This tool runs entirely in your browser using client-side JavaScript — your data is never uploaded to a server, stored or logged. Once the page has loaded you can even use it offline, which makes it safe for confidential or proprietary files.
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