CSV Splitter
Split large CSV files into smaller, manageable parts.
- Split by number of rows
- Split by file size
- Keep header row in all parts
- Download all parts as ZIP
- Preview before splitting
Split Preview
How It Works
Paste Your Data
Enter your lists or text into the input areas. One item per line for lists.
Click Compare
Hit the compare button and get instant results. Processing happens in your browser.
Export Results
Copy to clipboard or download results as CSV/TXT for further use.
When to Split CSV Files
Email Import Limits
Split large contact lists to meet email provider import limits (e.g., 1000 contacts per file).
Database Imports
Break large data files into chunks that your database can process efficiently.
Batch Processing
Split data for parallel processing across multiple systems or workers.
File Size Limits
Create smaller files to meet upload size limits of various platforms and tools.
Frequently Asked Questions
Upload your CSV file, choose your split method (by rows or file size), set your desired size, and click Split. Download all parts at once as a ZIP file.
Yes, you can choose to keep the header row in all split files, so each part can be used independently.
No strict limit since processing happens in your browser. Your device's memory is the only constraint, but most users can split files with millions of rows.