Just Open It

Open Excel files online

View spreadsheets without Excel and export any sheet as CSV.

Drop your .xlsx file here, or choose one

HEIC, RAR, ZIP, MSG, DOCX, PSD, EPUB and 80+ more

Choose file

Opened on your device — never uploaded

Try a sample:

Supports .xlsx, .xls, .xlsm, .xlsb, .ods — and 80+ other formats.

About the format

What is a XLSX file?

XLSX and XLS are Microsoft Excel's spreadsheet formats; ODS is the LibreOffice equivalent. Opening them normally means installing Office or uploading to Google Sheets.

  • See every sheet
  • Scroll big tables
  • Download any sheet as CSV
  • Nothing is uploaded — 100% private
  • Free, no sign-up

How to

How to open a XLSX file

  1. 1Choose your fileClick “Choose file” above, or drag your .xlsx file anywhere onto the page.
  2. 2It opens instantlyYour browser reads it locally. Nothing is uploaded anywhere.
  3. 3Scroll big tablesDownload the result, or open another file whenever you like.

Convert

Convert XLSX files

Batch convert in your browser — free, and nothing is uploaded.

Excel to CSV converterExport every sheet of an Excel file as a clean CSV.CSV to Excel converterTurn CSV exports into proper Excel workbooks in one click.

Frequently asked questions

Everything happens in your browser, so most answers come down to: it's private, free and instant.

Are formulas shown?

You see each cell's calculated value, the way it was last saved.

Is my file uploaded anywhere?

No. The file is opened by your own browser on your own device. Nothing is sent to a server, so it works for private and work files too.

Is it free?

Yes, completely free. No sign-up, no watermark, no limit on how many files you open.

Open other files

Open CSV filesData as a tableOpen JSON filesTree view & formatOpen text & code filesLogs, code, subtitlesOpen HEIC filesiPhone photos → JPGOpen RAR filesExtract without WinRAROpen ZIP filesBrowse & unzip