Free JavaScript to JSON Converter.

Convert JavaScript objects to JSON format easily, including handling special values and settings.

JavaScript to JSON Converter

Example Inputs

Quick Reference

Features

  • • Converts JS objects to valid JSON
  • • Handles special values (undefined, NaN)
  • • Supports Date objects
  • • Function conversion options
  • • Circular reference detection

Settings

  • • Customizable indentation
  • • Optional key sorting
  • • Special value handling
  • • Date format options
  • • Circular reference handling

Tips

  • • Start with 'const' or direct object
  • • Use double quotes for strings
  • • Avoid complex functions
  • • Check for circular references
  • • Validate output with JSON.parse()

Common Issues

  • • Undefined values not allowed in JSON
  • • Functions need special handling
  • • Date objects become strings
  • • NaN and Infinity become null
  • • Circular references cause errors

How it works

Four steps.

  1. 01

    Enter a JavaScript object or code snippet in the input area.

  2. 02

    Configure settings such as indentation, key sorting, and special value handling.

  3. 03

    Instantly view the converted JSON output with real-time updates.

  4. 04

    Copy the generated JSON output for further use or download it as a file.

Features

Easily Convert JavaScript to JSON.

Convert JS objects to JSON format with customizable settings. Supports dates, functions, and circular references.

  • JavaScript to JSON Conversion

    Quickly convert JavaScript objects to JSON with customizable options.

  • Handle Special Cases

    Manage dates, functions, and circular references seamlessly.

  • Configurable Settings

    Customize output with sorting, indentation, and value filtering.

  • Copy and Download

    Easily copy or download the generated JSON output.

FAQ

Questions.

Can't find an answer? Send us your question.

Can the tool handle circular references?

Yes, circular references are detected and represented appropriately.

How are date objects managed?

Dates are converted to ISO 8601 string format.

Can I customize indentation levels?

Yes, you can select the indentation style for the JSON output.

Are functions included in the output?

Functions can be included as strings based on your settings.

Does the tool support undefined values?

By default, undefined values are removed, but this can be adjusted in the settings.

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