Free · Browser-local tools
Split CSV files
Split CSV by record count, UTF-8 file size or desired file count. Preserve record boundaries and download individual files or a ZIP.
Split CSV
Start with your CSV
Open your file in the CSV editor with this tool already selected. Preview the result before downloading.
- Open your CSV and choose records per file, a byte budget or a file count.
- Choose repeated headers and preview file sizes and records.
- Download individual parts or one ZIP.
Free · No signup · File contents stay in your browser. Back to page and Resume keep your edits in this tab. Download your edited copy before refreshing; refresh opens the original file. Open files up to 1 GiB with browser storage.
Try a small example
3 records · 3 columns| id | name | amount |
|---|---|---|
| 1 | Example one | 12 |
| 2 | Example two | 24 |
| 3 | Example three | 18 |
At 2 records per file: part 1 contains IDs 1 and 2; part 2 contains ID 3. Headers repeat when selected.
Illustrative fictional data. Open the sample to try the tool.
How to split csv
- 1
Open your CSV and choose records per file, a byte budget or a file count.
- 2
Choose repeated headers and preview file sizes and records.
- 3
Download individual parts or one ZIP.
What to expect
Splits at parsed CSV record boundaries, preserving quoted newlines. Byte budgets include serialization and repeated headers; records that cannot fit are reported. At most 1,000 output files.
Local files and clear limits
These tools process file contents on your device. The browser workspace accepts files up to 1 GiB and 5 million records, subject to available browser storage and decoded-record limits. This tool's calculations support up to 100,000 records, 2 million cells and 64 MB of text. Download a new copy to keep your result.
Plain answers
Split CSV questions
What can I do with this split csv tool?+
Splits at parsed CSV record boundaries, preserving quoted newlines. Byte budgets include serialization and repeated headers; records that cannot fit are reported. At most 1,000 output files.
Does my CSV leave my device?+
File selection, editing and these task operations run in your browser. No account or file upload is required. Download a new copy to keep your result; refreshing restores the original input, not unsaved edits.
Do the editor and task have the same file limits?+
The editor opens files up to 1 GiB and 5 million records, subject to browser storage and decoded-record limits. This task supports up to 100,000 records, 2 million cells and 64 MB of decoded text.