View, clean and convert CSV files

Edit, Merge and Split CSV Files

These tools work on CSV files as a whole. Edit cells in a grid, combine several files into one, cut a large file by row count or column value, or download a sample file of fictional data. CSV File Format shows how quotes, commas and line breaks mark fields.

Tools in this group

  • CSV Editor — Open a CSV and edit it like a spreadsheet, or start a blank one; leading zeros and long IDs stay exactly as typed.
  • CSV File Format, Explained With a Live Field Splitter — Type a few CSV lines or pick an example to see exactly how quotes, commas and line breaks decide where each field begins and ends.
  • Merge CSV Files — Add several CSV files and combine them into one; columns are matched by name, even when the files list them in a different order.
  • Sample CSV Files: CSV File Sample Generator — Pick a dataset, columns and row count and download a sample CSV file; the same seed always gives the same data.
  • Split CSV File — Cut a large CSV into smaller files by row count, equal parts or the value of a column, and download them one by one or as a ZIP.