What is CSV to JSON conversion?

CSV to JSON conversion transforms tabular CSV (Comma-Separated Values) data into JSON (JavaScript Object Notation) format. Each CSV row becomes a JSON object, and column headers become the object keys. The resulting JSON array is easy to use in web applications, APIs, and JavaScript code.

What delimiters does the converter support?

The converter supports comma (,), semicolon (;), tab (\t), and pipe (|) as delimiters. When you load a file, the delimiter is detected automatically. You can also manually select the correct delimiter from the dropdown.

What does 'Auto-detect types' do?

When Auto-detect types is enabled, numeric values are converted to JSON numbers (e.g. '42' becomes 42), 'true'/'false' become JSON booleans, and empty or 'null'/'N/A' values become JSON null. This produces cleaner, more useful JSON for use in code.

What if my CSV has no header row?

Uncheck 'First row is header' and the converter will auto-generate field names like 'field1', 'field2', 'field3' etc. for each column. All rows including the first will be treated as data rows.

Is my CSV data kept private?

Yes. All conversion happens entirely in your browser using JavaScript. Your CSV data is never sent to any server, never stored, and never leaves your device. It is completely safe to convert sensitive or proprietary data.

Can I convert Excel files to JSON?

To convert Excel to JSON, first export your Excel spreadsheet as a CSV file (File → Save As → CSV), then paste or upload the CSV into our converter. The tool will convert it to JSON in seconds.

CSV to JSON Converter

Convert CSV data to JSON format instantly

Delimiter:

First row is header Auto-detect types Pretty print

CSV Input

Load CSV file

CSV to JSON Converter

CSV Input

JSON Output