CSV to JSON Converter Online Free

Converting CSV to JSON lets you use spreadsheet data in JavaScript apps, APIs, and modern databases. TextWonder's CSV to JSON converter works directly in your browser — paste your CSV and get a JSON array in one click.

How to Convert CSV to JSON

Open TextWonder's CSV to JSON Converter.
Paste your CSV data into the input area. The first row should be headers (column names).
Select the delimiter: Comma (default), Semicolon, Tab, or Pipe.
Click Convert.
The JSON array appears on the right — copy it or download as a .json file.

What Does the Output Look Like?

Given this CSV input:

name,age,city
Alice,30,London
Bob,25,Paris

The converter outputs:

[
  { "name": "Alice", "age": "30", "city": "London" },
  { "name": "Bob",   "age": "25", "city": "Paris"  }
]

Each CSV row becomes a JSON object with the header row values as keys.

Common Use Cases

API testing: Convert exported CSV data to JSON for testing API endpoints.
Database import: Transform CSV exports from Excel/Google Sheets into JSON for MongoDB or other NoSQL databases.
JavaScript apps: Feed CSV data into JavaScript applications as JSON arrays.
Data migration: Convert legacy CSV data files to JSON for modern systems.

Converting Excel to JSON

Excel does not export JSON directly, but you can convert via CSV:

Open your Excel file.
Go to File → Save As → CSV (Comma delimited).
Paste the CSV contents into the CSV to JSON converter.
Copy the JSON output.

For the reverse operation (JSON to CSV), see our JSON to CSV Converter.

Frequently Asked Questions

How do I convert CSV to JSON online?

Paste your CSV data into TextWonder's CSV to JSON Converter, choose your delimiter (comma, semicolon, or tab), and click Convert. The first row is used as JSON object keys.

What format does the CSV to JSON converter output?

An array of JSON objects — each CSV row becomes one object, with the header row values as the keys. For example, a row "Alice,30" with headers "name,age" becomes { "name": "Alice", "age": "30" }.

Does the CSV to JSON converter handle quoted fields?

Yes. Quoted fields like "Smith, John" (with a comma inside) are handled correctly — the comma inside quotes is not treated as a delimiter.

What if my CSV uses semicolons or tabs instead of commas?

Select the correct delimiter from the options: comma, semicolon, tab (TSV), or pipe. The converter will parse the CSV correctly.

Can I convert an Excel file to JSON?

Save the Excel file as CSV first: File → Save As → CSV. Then paste the CSV into the converter. Alternatively, use File → Export → CSV from Google Sheets.