Process files up to the browser memory limit.

How many parts can be created?

Free plan: up to 20 parts. Pro: much higher limits.

CSV Splitter

Split a large CSV into smaller files by row count, column value, or file size. The safest way to process sensitive data with

Your files never leave your device. Processed locally. 100% private.

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Complete your task perfectly in just three straightforward steps.

Drop your CSV file.

Split by row count, by column value (one file per unique value), or by file size.

Download a ZIP of all split files.

Everything you need to know about the CSV Splitter.

Can I split by column value?

Yes — one output file is created per unique value in the selected column.

Are headers included in each part?

Yes — the header row is repeated in every split file.

Is my file uploaded?

No. Everything runs locally in your browser.

Continue working with our suite of free data utilities.

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