PDF Mikata

Convert Excel to CSV or JSON

When you need Excel data in another app or program.

Your files are never uploaded. Everything is processed on this device.

  1. 1Choose an Excel file
  2. 2Choose the sheet and format
  3. 3Use the result

The file is read on this device. Nothing is sent anywhere.

Done

🔒 Your files are never sent to an external server. Everything is processed safely inside this browser.

How to use

  1. Tap "Choose an Excel file" and select an .xlsx file.
  2. Choose the sheet and the format (CSV, TSV or JSON).
  3. Copy the result or save it as a file.

How it works

  • A sheet of an Excel file is converted to CSV or JSON text.
  • Date cells are shown like "2026-10-21".
  • Formula cells show the saved calculated result.

Notes

  • Old .xls files and password-protected files cannot be opened.
  • Very large files may be slow. Images and charts are not extracted.

FAQ

Are my files uploaded anywhere?

No. Everything is processed inside the browser on your device.

What if the file has several sheets?

Choose the sheet you want under "Sheet".

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Guides for this tool

How to Convert Excel to CSV (Free, Phone OK)How to Convert Excel to JSONConverting an Excel File with Several SheetsWhen Dates Show as NumbersWhat Happens to Formula CellsIs My Excel File Uploaded?Converting an Old .xls File

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