Split a large CSV file into equal chunks

Upload a big file and split it into evenly sized parts by row count — 100, 500, 1000, or a custom number. Every part is exported as file_part_001.csv, 002, 003… and bundled into a single ZIP download.

How it works

  1. 1

    Upload a big file

    Drop in the file you want to split up.

  2. 2

    Choose chunk size

    Split by 100 / 500 / 1000 rows — or a custom number.

  3. 3

    Split it

    We slice the file into evenly sized parts.

  4. 4

    Download a ZIP

    Get file_part_001.csv, 002, 003… all bundled in one ZIP.

Why teams use it

Frequently asked questions

How do I choose the chunk size?

Pick a preset (100 / 500 / 1000 rows) or enter any custom row count.

How are the files delivered?

As a single ZIP containing numbered parts, so they're easy to hand out.

Why split lead files?

To give each agent an equal share, or to fit files under a dialer's import limits.

Ready to try Chunk Splitter?

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