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CSV Batch Splitter
Split a large CSV into smaller files, keep the header in every file, and download them all as one ZIP. Your file is processed in your browser and never uploaded.
Drop CSV files here
or tap to choose · you can pick several files
Choose files
Preview
Split large CSV files into smaller batches, online and free
Big CSV exports are hard to open and often too large to import. This tool cuts them into equal-sized files that keep the same columns, so every part can be opened or uploaded on its own.
How to split a CSV file
- Drop one or more CSV files into the box above.
- Check the preview and the row count to make sure the file looks right.
- Choose rows per file, or press Smart for a suggested size.
- Optionally remove empty or duplicate rows.
- Click Split into batches and download the ZIP.
Why use this CSV splitter?
- Private: your file is split in the browser and never uploaded
- Keeps quoted values, commas and line breaks inside cells intact
- Works with comma, semicolon and tab separated files
- Split several files at once, each into its own folder in the ZIP
- Free, with no signup and no row limit from our side
Common reasons to split a CSV
Many apps limit how big an import can be. Check the current limit in your app's help pages, then pick a batch size below it.
Shopify product imports
Product CSV imports have a file size limit, so large catalogs are easier to import in parts.
Try 1,000 rows per file
Excel & Google Sheets
Excel stops at 1,048,576 rows per sheet, and big files open slowly. Smaller parts open instantly.
Try 100,000 rows per file
Email & CRM imports
Upload contact lists to email tools and CRMs in smaller, safer batches.
Try 5,000 rows per file
Marketplaces & ERPs
Amazon, Daraz and ERP systems often process smaller feeds faster and with fewer errors.
Try 500 rows per file
Frequently asked questions
How does the CSV batch splitter work?
Choose one or more CSV files, pick how many rows you want in each batch or use smart split, then click Split. You get a single ZIP file containing all the smaller CSV files.
Will the header row be included in every split file?
Yes. By default every batch keeps the original header row, so each file can be imported on its own into Excel, Shopify, Amazon, Mailchimp or an ERP.
Can it remove empty rows or duplicates?
Yes, optionally. The preview shows how many empty and duplicate rows your file has. Tick the options to remove them while splitting, or leave them off to keep the data exactly as it is.
Is my CSV file uploaded to a server?
No. The file is read and split entirely in your browser. Nothing is uploaded, so customer lists and other private data stay on your device.
How large a CSV file can I split?
Files of a few hundred megabytes work well on a modern computer. Very large files depend on your device's memory; splitting on a desktop browser is recommended for them.