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CSV & Spreadsheet Tools

Excel to JSON Converter

Convert a workbook into JSON, with each row as an object keyed by the header.

or drag it here

.xlsx, .xlsm, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet · up to 30 MB

Processed on the server, deleted after download

Fill in the form and press “Convert to JSON” to see the result here.

How to use it

  1. 1Choose your file, or drag it onto the upload area.
  2. 2Adjust the options if you need something other than the defaults.
  3. 3Press the button. The conversion runs on the server and returns immediately.
  4. 4Download the result. The server copy is deleted as soon as you do.

About the Excel to JSON Converter

A workbook with one sheet produces a plain array of records. A workbook with several produces an object keyed by sheet name, so nothing is lost.

Dates are emitted in ISO format, which sorts correctly and is unambiguous - unlike the locale-dependent display format Excel shows.

Questions people ask

Why does this tool upload my file when the others do not?

Because the software it needs does not exist in a browser. Most tools here run entirely on your device; the ones that need FFmpeg, LibreOffice or a full PDF engine cannot. Those run on an isolated worker with no network access, and the file is deleted as soon as the result is sent to you.

What happens to the file I upload?

It is stored under a random name that is not guessable, processed by an isolated worker, and deleted as soon as you download the result - and in any case automatically after 60 minutes. Uploads are never indexed, shared or used for anything besides producing your result.

Is it free, and do I need an account?

Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.