Does it support nested objects?

Yes, nested JSON objects are converted into TOML tables ([section]) and nested arrays of objects into array-of-tables ([[section]]).

What happens to null values?

TOML has no null type, so null/undefined values are serialized as empty strings.

Is my JSON uploaded anywhere?

No, parsing and conversion happen entirely in your browser.

JSON to TOML Converter

Convert JSON to TOML with nested tables, arrays and array-of-tables support, right in your browser.

Input

Output

name = "toolzy"
version = 1
active = true
tags = ["fast", "free"]

[owner]
name = "Jo"
role = "admin"

[[servers]]
host = "a.example.com"
port = 8000

[[servers]]
host = "b.example.com"
port = 8001

Paste JSON and get valid TOML instantly. Nested objects become TOML tables, arrays of objects become array-of-tables, and everything runs client-side so your data never leaves your device.

How to use

Paste or edit the JSON on the left.
The equivalent TOML is generated live on the right.
Copy the TOML output for your config file.

Frequently asked questions

Does it support nested objects?: Yes, nested JSON objects are converted into TOML tables ([section]) and nested arrays of objects into array-of-tables ([[section]]).
What happens to null values?: TOML has no null type, so null/undefined values are serialized as empty strings.
Is my JSON uploaded anywhere?: No, parsing and conversion happen entirely in your browser.

How to use

Frequently asked questions

Related tools