JSON formatter & validator
Format, beautify, validate, and minify JSON online. Pinpoint syntax errors by line and column, sort keys, and copy or download the result.
JSON to CSV converter
Convert JSON to CSV and CSV to JSON online. Flattens nested objects, supports custom delimiters, and previews the table — all in your browser.
Paste text or drop a .json / .csv file onto the box.
How to use JSON to CSV converter
Convert a JSON array to CSV for Excel and Google Sheets, or turn a CSV file into JSON. Nested objects are flattened into columns like address.city, and every row gets the same columns even when objects have different keys.
Options
- Comma, semicolon, tab, or pipe delimiter
- Flatten nested objects or keep them as JSON text
- CSV to JSON: convert numbers and booleans automatically, and rebuild nested objects from dotted headers
Conversion runs in your browser, so data exports never leave your device.
JSON to CSV converter FAQs
Is JSON to CSV converter free?
JSON to CSV converter is a free online tool on ReallyUseful.Tools. No account is required.
Does JSON to CSV converter run in my browser?
JSON to CSV converter is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
More Developer Tools
Color picker & converter
Pick a color and convert between HEX, RGB, HSL, HSV, and CMYK. See tints, shades, and contrast ratios against black and white.
Base64 encode / decode
Encode text to Base64 or decode Base64 back to text with full UTF-8 support and an optional URL-safe alphabet.
Unix timestamp converter
Convert Unix epoch timestamps to human-readable dates and back. Supports seconds and milliseconds, local time, UTC, and ISO 8601.
Hash generator
Generate MD5, SHA-1, SHA-256, SHA-512, SHA3, and CRC32 hashes for text or files. Verify checksums and create HMACs locally.