JSON/XML/CSV Tools

JSON Converter

Free JSON converter for CSV, XML, and YAML. Choose direction in Mode, transform fixtures locally, and copy results without signup.

One converter covers the formats teams move between APIs, spreadsheets, and config files. Pick a direction in Mode, paste the source, and transform without juggling separate tools.

About JSON Converter

APIs speak JSON; spreadsheets want CSV; some partners still require XML or YAML. Separate one-off converters slow that handoff and multiply places you paste the same fixture.

Mode lists every direction on this page—JSON to CSV for tabular exports, CSV back to JSON for tests, plus XML and YAML bridges when an integration demands them.

Start with a small sample to confirm headers and nesting, then convert the full document. Paste-based transforms stay in the browser for typical sizes.

How to Use JSON Converter

Choose the conversion direction under Mode.
Paste source data that matches that direction.
Run Convert and check the output shape.
Copy or download the result.

JSON to CSV works best with an array of flat objects; deeply nested trees may need flattening first.

Common Use Cases

Analyst handoff

Export API JSON to CSV columns for spreadsheet work.

Test fixtures

Turn CSV exports back into JSON for automated tests.

Legacy XML

Produce XML when a partner cannot accept JSON.

Config YAML

Move between JSON fixtures and YAML snippets.

Tips and best practices

Converters sit next to the JSON toolkit so multi-step fixture work stays on one domain.

Frequently Asked Questions

Quick answers about how this tool works and when to use it.

Which Mode do I pick?

Match the source format on the left of the arrow—for example CSV → JSON when pasting CSV.

Can nested JSON become CSV?

Flat object arrays convert cleanly; deep nesting often needs flattening first.

How complete is YAML support?

It targets common fixture interchange, not every YAML edge case.

Do you store uploads?

There is no upload step; paste conversion runs locally.

Where is pretty-print?

Use the JSON Toolkit page for format, validate, minify, and diff.