CSV Splitter by Number of Rows

Different downstream tools have different row limits, and matching your split output to that specific limit is often the whole point: an import tool that caps at 100,000 rows, a reporting system that handles 250,000 comfortably, or simply your own preference for how large each piece should be.

Turbo CSV Splitter's Number of Rows method lets you set exactly the row limit your situation calls for, any value up to a ceiling of 1,000,000 rows per file. Enter your custom limit once, and every output file, except possibly the last, holds precisely that many rows.

Because the setting is a single number rather than a fixed preset, you can tune it to match whatever constraint you're working around, a database import batch size, a reporting tool's comfortable row count, or simply a size that feels manageable for manual review.

Preview reports your total row count and an estimate of how many files your custom limit will produce, letting you adjust the number before committing if the resulting file count doesn't match what you were expecting.

The header is repeated at the top of every output file regardless of your chosen row limit, so each file remains independently valid and directly usable no matter how you've configured the split.

Everything runs offline, on your own Windows PC, so setting a custom row limit and splitting your file never requires uploading any of your data to an external service. 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. Enter your custom row limit, up to 1,000,000.
6. Run Preview to confirm the row count and estimated files.
7. Click Start Split and monitor progress.
8. Open the output folder once the split completes.
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.

• Set any custom row limit up to 1,000,000 rows per file
• Matches your split output to any downstream tool's constraint
• Preview shows the resulting file count for your chosen limit
• Header preserved on every file regardless of row limit
• Adjust and re-preview before committing to the actual split
• Works on files of any size via streaming
• 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