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Splitting a Large CSV by Number of Rows

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Choose the CSV
  • Choose "Split" and the rows
  • Save the ZIP

In Merge and Split CSV Files, the header is added to each file.

Steps

  1. Choose the CSV to split
  2. Choose "Split by number of rows" and enter the rows per file
  3. Tap "Run and save" and open the ZIP
An Excel sheet holds about 1,048,576 rows at most.
Use "Merge, Split and Pick Columns from CSV" (free)

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