Why doesn't TOML support null values?

The TOML specification intentionally omits a null value to prevent ambiguity. If an attribute does not exist in TOML, the key is omitted entirely.

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TOML to JSON Converter Online

TOML to JSON conversion decodes Tom's Obvious Minimal Language into JSON syntax. It maps TOML key/value pairs, tables ([table]), inline tables ({a = 1}), and arrays of tables ([[table]]) into nested JSON objects with strict RFC compliance and error localization.

Parse(TOML 1.0) → Document Tables → Stringify(JSON)

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Source (TOML)121 chars

Target (JSON)

{
  "package": {
    "name": "ambiakshi-service",
    "version": "2.0.0"
  },
  "dependencies": {
    "serde": {
      "version": "1.0",
      "features": [
        "derive"
      ]
    }
  }
}

Frequently asked

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Because standard JSON lacks a native Date type, TOML Datetime values are serialized into standard ISO 8601 strings (e.g. '2026-09-09T00:00:00Z').

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