Spreadsheets & data · ONLINE TOOL

Split a CSV

Preview and split a CSV by row count or column value, checking each output before ZIP export.

Local processingNo account required

USE CASES

When to use Split a CSV?

Split a CSV into reviewable output files before export, either by maximum row count or by each distinct value in a column.

CONCRETE EXAMPLE

BEFORE

One CSV that is difficult to import

→

AFTER

19 CSV files of up to 1,000 rows · per-batch preview · reviewed ZIP

PRIVACY

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Splitting preserves all data rows and repeats the header in every output.
Column grouping uses the exact text value after trimming outer spaces; blank values are grouped under VIDE.
Distinct values can collapse to the same safe filename after forbidden characters are cleaned; WorkToolset automatically adds a suffix to prevent overwrite.
A very large number of groups creates the same number of files and can make the ZIP expensive for the browser to handle.

HOW IT WORKS

1Load the CSV and review the detected delimiter.
2Choose a batch size or grouping column.
3Preview the planned file count and open one or more outputs to inspect their first rows.

PRIVACY

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.