Does DataOlllo upload my CSV file?

No. The desktop splitting workflow processes the selected source on your computer.

How can I split a large CSV file?

Choose a row count, target file size, number of outputs, or meaningful column value, then verify headers and record totals in the resulting files.

Split Large CSV Files Offline

Split a large CSV into smaller, manageable outputs on your computer — without uploading the source file or writing code. Choose rows, approximate output size, or column values, then verify the results.

Features of DataOlllo’s Free CSV Splitter

Split by File Size

Specify how many parts you want, and DataOlllo slices your CSV instantly with zero hassle.

Split by Column Value

Group and split data by any column (like Region or Category) for targeted export — automated and easy.

Direct Split Without Loading

Split files by row count directly from disk without opening — ideal for massive CSVs and limited memory.

Why Choose DataOlllo’s CSV Splitter?

Process multi-gigabyte CSV files offline — no upload needed.
Zero coding required — intuitive and user-friendly interface for everyone.
Designed for files that are difficult to process in traditional spreadsheets or upload-first tools.
Fast, reliable, and privacy-focused: your data never leaves your device.
Perfect for analysts, marketers, developers, and researchers alike.

How to Split Large CSV Files Step by Step

Download and install DataOlllo (free).
Open your huge CSV file directly in the tool.
Choose your split method:
- By number of rows
- By file size (MB/GB)
- By column values (e.g., Region, Category)
Run the split and export smaller CSV files, then reconcile the output record counts with the source.
Use the new files in traditional spreadsheets, Python, R, or any database without issues.

Download DataOlllo for Free

Learn More About Splitting CSV Files

Dive deeper into how DataOlllo helps you split huge CSV files with zero effort. Our detailed article covers step-by-step instructions, screenshots, and expert tips.

✂️ Split Huge CSVs in Seconds — Read the Full Guide

How to split a large CSV file Split a CSV by column value Open a large CSV locally

Frequently Asked Questions

Can I split a CSV file larger than 1GB?

DataOlllo processes CSV files locally from disk. Practical capacity and speed depend on your computer, storage device, file structure, and split method.

Is DataOlllo completely free?

DataOlllo offers a 7-day free Pro trial. After the trial, you can upgrade to continue using all features without limits.

Will my data stay private?

Absolutely. DataOlllo runs offline, so your files never leave your computer — ensuring privacy and security.