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Working with a CSV that is too large for your tools to handle? Split it into smaller files by row count, file size, or column values. Each output chunk keeps the header row intact so every piece is immediately usable.
Large CSVs regularly exceed the row limits of spreadsheet software, choke email attachments, or slow down database imports. The splitter gives you three strategies: fixed row count (e.g., 10 000 rows per file), target file size (e.g., 5 MB chunks), or group-by splitting where rows sharing the same value in a chosen column go into their own file. All output files include the original header row.
Break a million-row export into chunks that Excel or Google Sheets can open.
Split a dataset into manageable batches for parallel import or API upload.
Group rows by a column value (e.g., region, department) into separate files for distribution.
Reduce file size below attachment limits by splitting into smaller parts.
Yes. Every output file starts with the original header so it can be used independently.
Yes. Select a column and the tool creates one file per unique value in that column.
Standard CSV files, packaged in a single zip download for convenience.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.