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Split large CSV files into smaller parts, or join them back together. Handles million-row files in your browser.
Standard mode: Clean data, remove logic, re-format delimiters.
Split into multiple files by Row Count or Column Value.
Advanced: Explode, Merge, Filter, or Key-Dedup specific columns.
Find and replace content within specific columns using Regex.
Break massive files into smaller, manageable chunks. Split by row count or by unique column values. Whether your file has 1,000 rows or 1 million, our tool handles it quickly right in your browser.
Already have split files? Combine them back into a single CSV with one click. Perfect for merging data exports from different sources or time periods into one unified dataset.
No need to guess your file's format. Our smart detection identifies commas, tabs, semicolons, or pipes automatically. Works with any CSV, TSV, or text based data file.
See your data in a clean table format before downloading. Toggle between raw text and table view to verify the output looks exactly how you need it.
Your data never leaves your device. All processing happens in your browser, no uploads, no servers, no cloud storage. Perfect for confidential business data or personal information.
Enable performance mode to handle files with millions of rows. Optimized algorithms ensure fast processing without crashing your browser or freezing your computer.
When your Excel or Google Sheets export is too big to email or upload, split it into smaller files that fit within size limits. Each file stays properly formatted.
Have a sales report with thousands of rows? Split it by region, product category, or any column value to create separate files for each team or department.
Many email platforms limit import sizes. Split your contact list into smaller batches that fit within their limits, then import them one by one.
Data exports often have extra quotes, inconsistent spacing, or unwanted characters. Use our cleaning options to fix formatting issues before processing.
Got a tab separated file but need comma separated? Or convert comma to semicolon for European Excel? Change delimiters instantly without complex formulas.
Not sure if your settings are correct? Toggle table view to see your data in a spreadsheet like format. Verify everything looks right before downloading.
Our tool gives you powerful options to split, clean, and transform CSV data. Here's how each feature helps you get the perfect result.
Divide your file into equal parts with a specific number of rows each. Great for breaking a 10,000 row file into 10 files of 1,000 rows each. Headers are preserved in every file.
Create separate files based on unique values in any column. One file for each region, product, or category, automatically named and organized for easy identification.
Search for patterns and replace them throughout your data. Supports regular expressions for advanced users who need precise control over text transformations.
Handle quoted fields correctly, even when they contain commas or line breaks. Trim, remove, or escape quotes as needed for your specific use case.
Organize your output alphabetically or by length. Enable duplicate removal to keep only unique rows, perfect for cleaning up messy data before analysis.
Choose your output delimiter comma, tab, newline, or custom. Wrap items in quotes, add prefixes, or format as JSON ready strings for developer workflows.
Paste or drag your CSV file into the input box, set the number of rows per file (like 500 or 1000), and the tool will create multiple output files. Switch between them using the dropdown. No signup required, completely free.
Yes, switch to "Split by Column" mode and select which column to use. The tool creates separate files for each unique value in that column, automatically named after the value.
No, everything runs locally in your browser. Your data never leaves your device, making this tool completely safe for confidential business data or personal information.
There is no hard limit. Enable "Performance Mode" for files over 1 MB. The tool handles files with millions of rows, limited only by your browser's memory.
Yes, use the output delimiter option to switch between comma, tab, semicolon, pipe, or any custom character. Input delimiter is auto detected but can be set manually if needed.
Click the "Table" button above the output box to switch from raw text view to a spreadsheet like table. This helps you verify formatting before downloading.
Yes, the interface is fully responsive and works on smartphones and tablets. Process CSV files anywhere, anytime, though large files work best on desktop.