ToolRecipe
Stays on this device No watermark Works offline

What do you need to get done?

Drop a file here

or .

/

Open an app

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Use one tool

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Spreadsheet converter

Convert spreadsheets between Excel (xlsx, xls), OpenDocument, Numbers, CSV, TSV and JSON, or save them as PDF. It is free and runs in your browser: nothing is uploaded and you need no spreadsheet program.

How to convert a spreadsheet

  1. 1Drop your spreadsheets in, or click to choose them
  2. 2Pick the format to convert to
  3. 3Click Convert and save the result
  4. Your spreadsheets in the new format, or one ZIP.

What happens to your files

  • Nothing is uploaded.Your spreadsheets are read and converted by your browser, on your own device.
  • Formulas stay in Excel and ODS.CSV, JSON and PDF get the values instead.
  • Several files at once.Drop in more than one and get them back together in a ZIP.

What you can do

  • Read Excel (.xlsx, .xls), OpenDocument (.ods), Numbers, CSV, TSV and JSON.
  • Write Excel (.xlsx), OpenDocument (.ods), CSV, JSON or PDF.
  • Pick one sheet of a workbook, or convert all of them. The "Sheet" list appears when the file has more than one.
  • Open a CSV with semicolons, as German Excel writes it. The separator is recognized, and decimal commas such as 1.234,56 become numbers.
  • See the first rows of the result before you save.

Good to know

  • Formulas stay in Excel and ODS files. CSV, JSON and PDF get the last calculated value.
  • All sheets to CSV gives one file per sheet; all sheets to JSON gives one object with a key per sheet.
  • A PDF is a plain table of each sheet, set in landscape when there are more than six columns.
  • A JSON file is read as a table: nested objects become columns named like a.b.

Questions

Are my spreadsheets uploaded to a server?

No. The files are read and converted by your browser on your own device. They are never sent to us or anyone else.

Do I need Excel?

No. The conversion runs in your browser, so you need no Excel or LibreOffice.

Can I open a Numbers file?

Yes. Add the .numbers file and convert it to Excel, OpenDocument, CSV, JSON or PDF.

What happens to formulas?

Excel and OpenDocument files keep them. CSV, JSON and PDF get the last calculated value of each cell.

Related tools

How it works

Small tools that run in your browser.

Four steps

  1. Start with a file or a task

    Drop a file, search, or pick a task.

  2. The tool opens in a window

    Open as many as you like, side by side as tabs.

  3. Results collect on the right

    Drag a result into the next tool.

  4. Save when you're done

    Saved files go to your downloads.

Who uses what

Tool sets for common jobs.

Put a tool on your home screen

The icon opens that tool, like an app.

iPhone and iPad

  1. Open the tool in Safari.
  2. Tap Share (the square with the arrow).
  3. Choose “Add to Home Screen”, then Add.

Android

  1. Open the tool in Chrome.
  2. Tap the menu (⋮) at the top right.
  3. Choose “Add to Home screen” or “Install app”.

Computer

  1. Open the tool in Chrome or Edge.
  2. Click the install icon in the address bar.
  3. Choose Install.

Skills

Claude skills we use ourselves, one job each.