JSON to CSV Converter

Convert a JSON array into a CSV that opens straight in Excel, Numbers or Google Sheets. Runs entirely in your browser.

  • Free, no watermark
  • No account needed
  • Nothing is uploaded

JSON CSV

Runs in your browser

Drop your JSON files here

or

Google Drive import is not available yet. Choose a file from your device.

Accepts .json, .txt. Up to 100 MB per file, 20 files at a time.

At a glance

Accepts
.json .txt
Produces
CSV
Files at once
Up to 20
Size limit
100 MB per file
Runs
In your browser

How it works

How to convert JSON to CSV

  1. Add your JSON files

    Drag them onto the panel above, or press Choose Files. Accepts .json, .txt.

  2. Press Convert to CSV

    Your browser does the work. A progress bar tracks it, and nothing is uploaded at any point.

  3. Download your CSV files

    The result appears with its new size. Take the files one at a time or the whole set as a ZIP.

From API output to spreadsheet

An API response or a database export is easy for code to read and awkward for a person to review. CSV opens in a spreadsheet, where filters and pivot tables live. Every key found across the objects becomes a column, so records with missing fields still line up under the right headings.

Nesting and quoting

Nested objects are flattened with dotted keys, so address.city becomes its own column. Arrays of values are joined with a semicolon inside a single cell. Anything containing a comma, a quote or a line break is quoted and escaped, which is what stops a spreadsheet from shifting half your data one column to the right.

JSON to CSV: common questions

What JSON shape does it expect?

An array of objects, which is what most exports and API responses return. A single object converts to a one row file, and an object wrapping an array under a key such as data or results is unwrapped automatically.

Will Excel open it correctly?

Yes. The file is written as UTF-8 with a byte order mark, which is what stops Excel from mangling accented characters and other non Latin text.

How are dates handled?

They are written exactly as they appear in the JSON, with no reformatting, so an ISO timestamp stays an ISO timestamp.

Is my data sent anywhere?

No. The conversion happens in your browser, so a payload containing personal data never leaves the machine.

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