TRANSFORM TOOL · 04

Split CSV by Row Count

Break one large CSV into smaller files.

Choose the maximum data rows per file and download numbered CSV parts in a ZIP, each with the original header.

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Upload a CSV file to split it

Your data never leaves your browser

Drop a CSV file here Choose a fileCSV, TSV or text · up to 50 MB

THE PROBLEM

How do I split a large CSV into smaller files?

Many CRMs, shops, accounting tools, and databases limit how many rows a single import can contain. Splitting on raw text lines is unsafe because quoted CSV values can contain line breaks of their own.

WHAT IT CHANGES

Divides data rows into numbered files using the maximum you choose.
Repeats the original header in every part.
Packages all parts into one ZIP download.

WHAT IT DOES NOT CHANGE

Quoted multiline records are kept together.
Column order, values, encoding, and separator remain consistent.
The original large file is not edited.

HOW IT WORKS

Clear changes, no hidden guesses

Headers are repeated

Each part receives the original first row, so every file can be imported independently.

Quoted lines stay together

Line breaks inside a quoted cell are part of that record and are never used as split points.

One tidy download

All numbered files are packaged into a ZIP in your browser.