JSON to CSV Converter

Paste JSON and download clean CSV — nothing ever leaves your device.

Processed locally — nothing is uploaded

Input

Output

About Code Formatter

Useful for making a minified payload readable again, for checking that a config parses before you ship it, or for stripping a file down for production. Switching language keeps whatever you have already pasted.

Convert a JSON array of objects into clean, spreadsheet-ready CSV in a single paste — column headers are inferred from your object keys and every value is quoted and escaped correctly. Because parsing runs entirely in your browser, even large or sensitive API responses never leave your device.

Paste messy or minified code and instantly beautify, minify or validate JSON, HTML, CSS, SQL, XML and YAML. Beautifying re-indents your source with consistent spacing so it is easy to read and review; minifying strips whitespace and comments to ship smaller files; validating surfaces syntax errors with the exact location so you can fix them fast.

It also doubles as a converter between common data formats — JSON to CSV, CSV to JSON, YAML to JSON and back — which is handy when wiring up APIs, configs or spreadsheets. Converting is where structure mismatches surface: CSV has no nesting, so a nested JSON object has to be flattened or dropped.

Learn how this works

A Practical Guide to Everyday Developer Encoding & FormattingHow and when to use Base64, JSON formatting, hashing, JWTs, regex and cron — with free in-browser tools for each task.11 min read

Frequently asked questions

How are nested JSON objects handled?

CSV is a flat format, so nested objects and arrays are serialised into their column rather than expanded into new ones. If you need nested fields as separate columns, flatten the JSON first — rename `user.email` to a top-level `user_email` key — and then convert.

What happens if my objects have different keys?

The header row is the union of every key seen across the array, so no data is silently dropped. Rows missing a key get an empty cell in that column, which spreadsheets and most importers treat as null.

Are commas and quotes inside values escaped correctly?

Yes. Any value containing a comma, a double quote or a line break is wrapped in double quotes, and embedded quotes are doubled, per RFC 4180. That is what stops a single address field from shifting every later column.

Pro Tips

→Paste unformatted JSON, HTML, CSS, or SQL code and apply consistent indentation (2, 4, or tab spaces) in one click.
→Use minification toggle to reduce code size by 30-50% for production deployment or email constraints.
→Export formatted code directly to clipboard to paste into documentation, emails, or config files instantly.
→Compare formatted vs minified side-by-side to verify code compression doesn't break syntax.

Common Use Cases

•Turning a paginated API response into a spreadsheet a non-technical colleague can filter
•Preparing a bulk-import file for a CRM or billing system that only accepts CSV
•Getting a quick row count and column overview of an unfamiliar JSON export

How It Compares

While Prettier and VS Code extensions require installation and configuration, our web-based formatter works instantly on any device without setup, offering broader language support (HTML, CSS, SQL) in a single tool compared to language-specific formatters like Beautifier.io.

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