CSV Split Tool
Break large CSV files into smaller chunks. All processing happens in your browser.
Upload CSV File
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Drag & drop your CSV file here
or
How to Use
- Upload a CSV file (supports files up to 100MB)
- Choose your split method: by row count, file size, or column value
- Configure the split options
- Click "Split CSV" to create the split files
- Review the preview showing all created files
- Download the ZIP archive containing all split files
Frequently Asked Questions
When should I split by row count vs file size?
Split by row count when you need consistent numbers of rows per file (e.g., for batch processing). Split by file size when you need to stay under size limits (e.g., email attachments or database imports with size restrictions).
What does "Split by Column Value" do?
This creates separate files for each unique value in the selected column. For example, splitting by "country" creates one file per country, or splitting by "customer_id" creates one file per customer.
Will the header row be included in each file?
Yes! The header row from your original file is automatically included in each split file, so each one is a complete, valid CSV file.