About Split CSV File
Split massive CSV files by row count (e.g. 500, 1000, 5000 rows per chunk) while preserving the original header row in every file. 100% client-side memory execution.
Key Capabilities & Features
- Custom chunk size (e.g. 100, 500, 1000, 5000 rows)
- Preserves header row in every split file
- No cloud upload file limits
- Download individual split files with 1 click
How to Use Split CSV File
1
Upload Large CSV
Select the CSV file you need to split.
2
Set Row Chunk Size
Enter how many rows each split file should contain.
3
Download Split Parts
Download your smaller CSV chunks.
Privacy & In-Browser Execution Guarantee
100% Client-Side. Large files are split locally without upload size limits.
Frequently Asked Questions
Why split large CSV files?
Many email marketing tools, CRMs, and database importers have strict file size or row limits (e.g., max 10,000 rows). Splitting allows clean, error-free batch imports.