CSV Editor

Edit CSV files with ease

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1
1 rows × 3 columns

About the CSV Editor

This CSV editor lets you edit rows and columns in a grid and download the result, without Excel silently reformatting dates, converting long codes to scientific notation or stripping leading zeros.

A CSV editor exists because Excel is actively hostile to CSV files. It reformats anything that looks like a date, turns long product codes into scientific notation, strips the leading zeros off postcodes, and then offers to save those changes back over your file.

Here the values are treated as text and left exactly as they are. You can add and delete rows and columns, edit individual cells, and download a CSV whose untouched fields are byte-identical to what you started with.

That makes it the right tool for correcting a handful of cells in an export before an import — a mistyped email, a wrong reference, a row that needs removing — without risking silent damage to the other ten thousand rows. Everything runs in your browser.

How to use the CSV Editor

  1. Load your CSV. Upload the file or paste the data into the grid.
  2. Edit the cells. Change values, or add and delete rows and columns.
  3. Check the untouched fields. Confirm dates and codes are unchanged.
  4. Download the CSV. Save the edited file.

CSV Editor features

  • Spreadsheet-style grid editing
  • Add and delete rows and columns
  • Values treated as text, never reformatted
  • Leading zeros and long codes preserved
  • Dates left exactly as written
  • Runs entirely in your browser

Frequently asked questions

Why not edit the CSV in Excel?

Excel reformats dates, converts long codes to scientific notation and strips leading zeros, then offers to save those changes.

Are my untouched values preserved exactly?

Yes. Values are treated as text, so anything you do not edit comes back byte-identical.

Can I add and remove columns?

Yes, along with rows and individual cell edits.

Is my file uploaded?

No. Editing happens entirely in your browser.

How large a file can I edit?

Limited by your device's memory. Very large exports are better handled by a script.