CSV Splitter Online
Divide large CSV files into smaller chunks by row count instantly. 100% free and securely processed entirely in your browser.
Large CSV Input
Split Output
100% Client-Side Privacy
This CSV Splitter strictly operates inside your browser. Your sensitive CSV data is never uploaded to our servers, ensuring total data privacy and zero risk of interception.
How to Split a Large CSV File
- Step 1: Paste your massive CSV file data into the left text area.
- Step 2: Set the maximum number of rows you want each smaller file to contain. The header row is automatically included in every chunk.
- Step 3: Use the dropdown selector above the right text area to switch between the chunks. Click "Copy Chunk" to save each piece.
Common Use Cases
- API Upload Limits: Many web services (like Mailchimp or Shopify) have row limits for CSV imports. Splitting your file ensures your imports don't fail.
- Excel Performance: Opening a CSV with a million rows in Excel can cause it to freeze or crash. Dividing it into 100k-row chunks makes the data manageable.
Frequently Asked Questions (FAQ)
Is my CSV data uploaded to a server?
No. All CSV splitting happens entirely within your web browser using JavaScript. Your sensitive data never leaves your device.
Is there a file size limit?
The only limit is your browser's available memory. Most modern browsers can easily handle CSV files up to several hundred megabytes locally.