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JSON Unflattener

Rebuild nested JSON from an object with dotted keys.

Runs in your browserJSON → JSON
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Example

Input
{"a.b":1,"a.c":2}
Output
{
  "a": {
    "b": 1,
    "c": 2
  }
}

How to use the JSON Unflattener

  1. Paste or type your JSON into the input area, or open a file from your device.
  2. Adjust the options above the editor if the tool offers any.
  3. Review the JSON result, then copy it or download it as a file.

Privacy and limitations

  • Your data is processed on your device and is not uploaded to any server.

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