CSV to JSON Converter

Paste CSV data (with a header row) below to get a proper JSON array of objects - exactly the shape most APIs, scripts, and NoSQL databases expect.

Dotted headers like address.city are automatically rebuilt into nested JSON objects, so a spreadsheet exported from a flattened JSON source converts back cleanly.

Secure & Private: Your data is sent to our server only to perform the conversion, then immediately discarded — nothing is logged or stored.
Input Stats Lines: 0 Words: 0 Chars: 0 Size: 0 KB
Output Stats Lines: 0 Words: 0 Chars: 0 Size: 0 KB
System Status: Ready

Preview

Input

Input statistics are shown in the status bar above.

Output

Output statistics are shown in the status bar above.

Frequently Asked Questions

Do I need a header row?

Yes - the first row is used as the property names for every JSON object generated from the rows below it.

What if my CSV uses semicolons instead of commas?

Standard comma-separated CSV is expected. If your file uses tabs, use the TSV to JSON option instead (choose TSV as the source format).

Will numbers stay numbers?

Values are parsed as plain text by default, matching how most CSV tools behave - wrap numeric strings you want preserved exactly (like ZIP codes) in quotes in your source file if needed.

Accessibility Statement

Universal Data Converter PRO is committed to ensuring digital accessibility for users with disabilities. Our interface is designed to meet WCAG 2.1 Level AA standards.

Accessibility Features