Split Huge CSV

Split large files into smaller chunks. 100% private—your data stays in your browser.

No uploadsNo signupInstant results
1

Upload Large CSV

Drop a massive file.

2

Chunking

We split it into smaller files by row count.

3

Download ZIP

Get a ZIP containing all the parts.

Click to upload or drag & drop

Supported files: CSV, TXT, JSON (Max 20MB)

Drop your file here

or click to browse

Large CSV file.

Max 20MB 100% Private

What This Tool Does

This tool breaks down massive datasets into manageable chunks, making them easier to open in Excel or upload to systems with set limits.

How It Works

1Upload your large CSV.
2Specify the max rows per file (e.g., 5000).
3The tool slices the data preserving headers for each file.
4Download a ZIP of the parts.

Input Format

A large CSV file.

Output Format

Multiple smaller CSV files.

When to Use This Tool

  • File is too big for Excel (1M+ rows).
  • Upload limit is 10MB per file.
  • You need to distribute work across a team.