CSV to JSON Converter with Semicolon and Tab Delimiters

What does the CSV to JSON converter do?

It turns delimited tabular data — a spreadsheet export, a database dump, a report someone emailed you — into a JSON array of objects. The first row is treated as the header, and each subsequent row becomes an object whose keys are those header names. Quoted fields are handled, so values containing the delimiter itself (like "Smith, John") don't break the row into extra columns.

The conversion runs entirely in your browser. The CSV you paste is never uploaded, stored, or logged, so it's safe to convert exports containing emails, order data, or other records you wouldn't put in a random web form.

When to use it

The most common case is seeding or testing: you have data in Excel or Google Sheets and your code wants JSON — fixtures for tests, a mock API response, a one-off import script. Instead of writing a throwaway parser, export as CSV, paste, convert.

It's also handy in the other direction of a debugging session: when an ETL job or import endpoint chokes on a CSV file, converting a few rows here shows you exactly what objects your parser should be producing, which makes it obvious whether the file or the code is at fault. Semicolon-delimited files (the default in many European Excel locales) and tab-separated exports are covered by the delimiter switch — if your columns come out mashed into one field, that switch is almost always the fix.

Example

Paste:

name,age,email John,30,[email protected] Jane,25,[email protected]

and Convert produces a two-element array: [{"name": "John", "age": "30", "email": "[email protected]"}, ...]. Note that every value is a string — CSV has no type information, so numbers stay quoted and you cast them in your code where you know the intended type. Use "Copy link to this result" to share a permalink that restores your exact input and delimiter for a teammate; the data is encoded in the link fragment, not sent to any server. Going the other way? There's a matching JSON to CSV tool.