Large Dataset Row Splitter

Row-based splitting is the most direct way to divide a large dataset, 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 Large Data Splitter's Number of Rows method does exactly this: every output part gets the same number of rows, up to 1,000,000 rows per file, working across CSV, TSV, TXT, XLSX, JSON, and XML input, regardless of the dataset's original format.

This is the most common way to split a file into multiple files for import into another system, whether that's a database with a batch size limit, a reporting tool with a comfortable row count, or simply a size that feels manageable for manual review.

Splitting an Excel file by row also removes the roughly 1,048,576-row-per-sheet ceiling Excel itself imposes on a single worksheet, since each part becomes its own workbook once split.

Preview reports your total row count and calculates how many output files your chosen setting will produce, so you know exactly what to expect before committing to the actual split.

Everything runs offline, entirely on your own Windows PC, so splitting a large dataset by row count never requires uploading any of your data to an external service. Delimiter and encoding both default to Auto for relevant formats 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 data file directly in a spreadsheet program.

1. Install Turbo Large Data Splitter on your Windows PC.
2. Browse to or drag and drop your dataset.
3. Choose your output folder and format.
4. Select the Number of Rows split method.
5. Set your desired rows per file, 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 if compressing many output parts.
10. Check the status bar for the final row count and file count summary.

• Splits by a fixed row count, up to 1,000,000 rows per file
• Works across CSV, TSV, TXT, XLSX, JSON, and XML
• Removes Excel's roughly 1,048,576-row-per-sheet ceiling
• 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