Divide massive datasets into smaller, manageable chunks instantly. Processed 100% locally in your browser for maximum privacy.
Max recommended file size: up to 200MB depending on your RAM.
Processing data...
Bypass Excel limits and make massive datasets manageable in seconds.
Select your large CSV file. It loads instantly into your browser's memory without network delays.
Specify how many rows each split file should contain. Keep the header toggle ON for easy importing.
Hit split. The tool will auto-generate a single ZIP file containing all your perfectly divided CSV chunks.
Microsoft Excel and Google Sheets have a strict limit of 1,048,576 rows. If you try to open a larger file, data gets cut off. Our Client-Side CSV Splitter allows you to break that massive file into multiple smaller files (e.g., 500,000 rows each) so you can safely open them in Excel without losing any records.
Yes, because no uploading happens. This tool utilizes modern HTML5 APIs to read and process your files directly inside your browser. Your data is never sent to our servers, ensuring total compliance with GDPR, HIPAA, and corporate data privacy policies.
Since the processing happens in your browser, the limit depends on your device's RAM. Most modern computers can comfortably split files between 100MB to 500MB. For gigabyte-sized files, we recommend closing other browser tabs for better performance.