What TOML structures can be converted?

Any top-level key whose value is an array of objects (tables) — e.g. [[products]] or top_level_key = [{...}, {...}]. Scalar arrays and nested sub-tables are not supported for TSV output.

Does this upload my TOML data anywhere?

No. All parsing and conversion happens in your browser using the @iarna/toml JavaScript library. Nothing is sent to any server.

What happens if a row is missing a column?

Missing fields are output as empty cells, so every row in the TSV has the same number of columns.

Can I open the downloaded TSV in Excel?

Yes. Excel and Google Sheets both open .tsv files natively. In Excel use File > Open and select the file; Google Sheets accepts it via File > Import.

Are nested tables supported?

Nested objects within a row are serialized as JSON strings in a single cell. Only one level of nesting is flattened automatically.

TOML to TSV Converter

Name: TOML to TSV Converter
Availability: InStock
Author: Nham Vu

Paste a TOML array-of-tables and instantly download or copy it as tab-separated values.

TOML Input

TSV Output

Summary

Paste a TOML array-of-tables and instantly download or copy it as tab-separated values.

How it works

Paste your TOML document into the input panel.
The tool detects all top-level keys that contain an array of objects.
Select which array-of-tables to export from the dropdown.
Column headers are inferred from the union of all keys in the array items.
Click "Copy TSV" or "Download .tsv" to get your data.

Use cases

Export Cargo.toml dependency tables to a spreadsheet for auditing.
Convert pyproject.toml tool configuration arrays for documentation.
Turn TOML dataset files into TSV for import into databases.
Quickly compare structured TOML config arrays side-by-side in a spreadsheet.
Convert TOML fixtures to TSV for use in test suites that read CSV/TSV.
Share configuration tables with non-technical stakeholders via Excel.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu