# CSV Splitter

> Split a CSV into chunks of N rows, or into separate files grouped by a column value.

A CSV splitter breaks one file into several — either fixed chunks of N rows for batch processing and import limits, or one part per distinct value in a column, which is how you separate a combined export back into per-region or per-customer files.

**URL:** https://convertto.tech/t/csv-splitter
**Category:** Data & Format Tools (https://convertto.tech/c/data-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your csv.
2. Choose the split.
3. Set the rows per chunk.
4. Enter or paste your group by column.
5. Choose the delimiter.
6. Turn "Repeat the header in each part" on or off as needed.
7. The result appears immediately — copy or download it.

## FAQ

### Why split a CSV at all?

Import limits, mostly. Many systems cap uploads at a few thousand rows, and several tools slow dramatically past a certain file size. Splitting by a column value is different — that separates one combined export back into per-region or per-client files.

## Related tools

- [CSV Analyser](https://convertto.tech/t/csv-analyser): Profile a CSV: column types, missing values, ranges, distinct counts and outliers.
- [CSV Column Extractor](https://convertto.tech/t/csv-column-extractor): Pull selected columns out of a CSV by name or position, and reorder them.
- [CSV Duplicate Remover](https://convertto.tech/t/csv-deduplicator): Remove duplicate rows from a CSV, matching on every column or just a key you choose.
- [CSV Merger & Joiner](https://convertto.tech/t/csv-merger): Join two CSV files on a shared key, or stack them, with inner, left and outer joins.
- [CSV to Markdown Table](https://convertto.tech/t/table-to-markdown): Turn CSV, TSV or pasted spreadsheet data into a Markdown, HTML or reStructuredText table.
- [CSV Viewer & Table Converter](https://convertto.tech/t/csv-viewer): View CSV data as a sortable table and export it as JSON or a Markdown table.
- [Data Format Converter](https://convertto.tech/t/data-format-converter): Convert between JSON, YAML, XML, CSV, TSV and TOML in any direction, locally in your browser.
- [Excel to CSV Converter](https://convertto.tech/t/excel-to-csv): Export Excel sheets to properly quoted CSV.