Split CSV Every 1000 Rows

A row count of 1,000 per file is a common choice for keeping output small enough for quick manual review, a lightweight import batch, or a preview sample that's still substantial enough to be useful without being unwieldy.

Turbo CSV Splitter's Number of Rows method handles this directly: set rows per file to 1,000, and every output file gets exactly that many data rows, with the header repeated at the top of each one so every file opens correctly on its own.

A file with, say, fifty thousand rows split every 1,000 rows produces fifty tidy files, each small enough to open instantly, scroll through comfortably, or attach to an email without hitting a typical attachment size limit.

Preview confirms your total row count and shows exactly how many 1,000-row files the split will produce before you commit, so there are no surprises about the resulting file count once the actual split runs.

The streaming engine handles this the same way regardless of the source file's total size, whether you're splitting a modest file or a multi-million-row export down into 1,000-row pieces.

Everything runs offline, on your own PC, so splitting a file every 1,000 rows never requires uploading 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 rows per file to 1,000.
6. Run Preview to confirm the row count and estimated files.
7. Click Start Split and monitor progress.
8. Open the output folder to find your 1,000-row 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.

• Small, quick-to-open files for manual review
• Header repeated on every 1,000-row file
• Preview confirms the exact resulting file count
• Consistent, predictable file sizes throughout
• Works on source files of any total size
• Fast to configure with a single setting
• 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