jsontoml
JSON to TOML Converter
Convert JSON to TOML instantly. Runs locally — your data is never uploaded.
To convert JSON to TOML, paste your JSON into the editor above and the TOML output appears immediately. Parsing and serialisation happen in your browser, so API payloads, secrets and config files never leave your device.
Runs in your browserAbout converting JSON to TOML
JSON is the default interchange format for web APIs. It has no comments and no trailing commas. TOML is designed for configuration and maps cleanly onto a hash table. It is used by Cargo, Poetry and many Rust and Python projects.
Share this converter
Related tools
Mock Data GeneratorGenerate realistic fake test data in 14 formats from 100+ field types, with reproducible seeds.INI & Config File ParserParse INI, .conf, .cfg and .properties files into structured JSON, YAML or TOML.CSV Column ExtractorPull selected columns out of a CSV by name or position, and reorder them.CSV Viewer & Table ConverterView CSV data as a sortable table and export it as JSON or a Markdown table..env to JSON ConverterConvert .env files to JSON and back — for config migrations and CI variables.JSON FlattenerFlatten deeply nested JSON into dot-notation keys, or expand flat keys back into nested objects.