🌐 English
Open app

Formats / JSON

Convert JSON files

Convert JSON (JSON Data) files into 14 formats, right in your browser. .json · application/json

Convert now

About this format

A data format Douglas Crockford drew from JavaScript notation in 2001. Human-readable, handled by every language, and the standard for API responses.

What it can hold

  • Objects, arrays, numbers, strings, booleans, null
  • Nesting

What it cannot

  • Comments
  • A date type — dates are strings
  • Tables — possible, but forced

When you convert it

JSON → CSVA flat array becomes a table. Nesting flattens into a.b.c column names.
JSON → XLSXAs csv, but in sheets.
JSON → YAMLNothing lost; easier to read.

When it will not open

  • One trailing comma breaks the whole file — json is not forgiving
  • Encoding — must be UTF-8

In one line A json that will not open? Put it in our Code & Data Checker and it points to the line.

Frequently asked questions

How do I convert a JSON file?

Drop the file into the window, pick the target format, and download the result. No account required.

Do I need to install anything?

No. It runs in your browser. A Windows installer is available separately if you prefer one.

What if the format I want isn't listed?

Every engine's capabilities are merged into a single graph, so unlisted pairs are chained automatically through intermediate formats along the least-lossy route.