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JSON-TOML Converter
Conversion
Convert between JSON and TOML with live side-by-side panes. Paste either format and the other updates instantly in your browser.
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JSON-TOML Converter
JSON
TOML
A Rust project's Cargo.toml or a Python project's pyproject.toml holds configuration that a JavaScript-based build tool or script often can't read directly, since TOML and JSON are both structured formats but not remotely the same syntax. This JSON-TOML converter turns either format into the other in live side-by-side panes, all in the browser with nothing uploaded.
See moreSee less about the JSON-TOML Converter
Useful for rewriting JSON config as TOML for Cargo or pyproject files, or feeding TOML config into a JSON-only tool.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline
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Quick answers for JSON-TOML Converter
Does it convert both ways?
Yes. Paste or type JSON on the left and TOML updates on the right; paste or type TOML on the right and JSON updates on the left. Incomplete text shows an error without wiping the other pane.
What TOML syntax can it parse?
[section] headers, key = value lines, double or single quoted strings, true/false booleans, and plain numbers, each converted to the matching JSON type of string, boolean, or number.
Does it support nested tables or arrays?
It handles single-level [section] tables and flat key = value pairs. TOML arrays, inline tables, and multi-line strings are not supported yet.