Open Excel files online

Open any .xlsx without Excel or a Microsoft account. Every sheet, searchable and sortable, in a second.

  • .xlsx
  • .csv

Drop a spreadsheet here

Excel .xlsx or CSV · or paste with Ctrl V

Opens on your device. Nothing is uploaded.

What it does

Built for this one job

  1. 01

    All sheets, one click apart

    Every sheet in the workbook gets its own tab. Dates, numbers and TRUE/FALSE values show up as Excel displayed them.

  2. 02

    Search and sort instantly

    Type to filter rows across all columns, click a header to sort. Numbers sort as numbers, text alphabetically.

  3. 03

    Export what you see

    Download the current sheet — filtered and sorted — as CSV for any app or JSON for developers.

  4. 04

    Handles big workbooks

    The file is read in a background thread and only visible rows are drawn, so the page never freezes.

How it works

Three steps, no account

  1. Step 1

    Drop an .xlsx file into the box, or click “Choose file”.

  2. Step 2

    Pick a sheet from the tabs above the table.

  3. Step 3

    Search, sort, and export the sheet as CSV or JSON.

Good to know

Viewing a spreadsheet without Excel

An .xlsx file is a zipped set of XML files: one per sheet, plus shared strings and styles. The viewer unpacks it in your browser and shows every sheet as a fast, scrollable table.

Formulas are not recalculated. Excel stores the last calculated value of every cell inside the file, and that is exactly what you see — the numbers the author saw when they saved it.

Formatting such as colours, merged cells and charts is not shown: the focus is on the data. If you need the data elsewhere, export the sheet as CSV and it opens in every spreadsheet app.

FAQ

Questions people ask

Is my file uploaded anywhere?

No. Your browser opens the file on your own device. There is no server that receives it, so there is nothing to store, leak or delete afterwards.

Does it open old .xls files?

Not yet — only .xlsx. Save an .xls file as .xlsx or CSV in any spreadsheet app and open it again.

Are formulas recalculated?

No. You see the values Excel saved in the file the last time it was calculated.

Does it work on a phone?

Yes. It runs in any modern browser on Windows, Mac, Linux, Android and iPhone — there is nothing to install.

Is it actually free? Where is the catch?

No catch: no account, no trial, no watermark and no limit that appears halfway through. The work happens on your computer, so serving you costs us next to nothing.

More tools

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