CSV Row Splitter

Splitting by row count is the most direct way to divide a CSV file, treating every row equally and dividing them into groups of your chosen size, without needing to consider column values, dates, or any other data-specific logic.

Turbo CSV Splitter's Number of Rows method does exactly this: set your desired row count per file, up to a ceiling of 1,000,000, and the tool divides your data into consistently-sized output files based purely on row position, with the header repeated at the top of each part.

Because the method doesn't consider row content at all, just position, it works identically regardless of what's actually in the data, structured records, log entries, survey responses, or anything else stored as CSV rows.

Preview reports your total row count and calculates exactly how many output files your chosen row count per file will produce, so you can confirm the resulting file count matches your expectations before running the actual split.

The streaming engine handles row-based splitting the same way regardless of file size, so a modest export and a multi-million-row dataset both split reliably using the same straightforward row-count logic.

Everything runs offline, entirely on your own Windows PC, so splitting CSV data by row count never requires uploading any of your data anywhere. Delimiter and encoding both default to Auto and are detected directly from the file itself, so you only need to touch them in the rare case detection gets something wrong, an unusual delimiter or a legacy encoding, for example. This makes the tool equally useful for data analysts working with irregular exports, developers automating a recurring pipeline step, e-commerce teams distributing catalog data by category, and anyone else who regularly runs into the practical limits of opening a large CSV file directly in a spreadsheet program.

1. Install Turbo CSV Splitter on your Windows PC.
2. Browse to or drag and drop your CSV file.
3. Choose your output folder.
4. Select the Number of Rows split method.
5. Set your desired row count per file.
6. Run Preview to confirm the resulting file count.
7. Click Start Split and monitor progress.
8. Open the output folder to find your row-split files.
9. Adjust the parallel worker slider (1-128) if compressing many output parts.
10. Check the status bar for the final row count and file count summary.

• Divides data purely by row count, up to 1,000,000 per file
• Header repeated on every resulting file
• Works identically regardless of what's in the data
• Preview confirms the exact resulting file count
• Consistent, predictable file sizes throughout
• Streaming engine handles files of any size
• Runs fully offline with no uploads required
• One-time purchase for Windows, with Gumroad license activation
• Compression options: uncompressed, per-part ZIP/gzip, or a single bundled archive
• Works with files on local drives, external drives, and network shares