CSV to JSON Converter – Convert CSV to JSON Free Online
Convert CSV files or text to JSON instantly. Supports headers, custom delimiters, and nested objects. Free CSV to JSON converter.
Frequently Asked Questions
Comma (,), semicolon (;), tab, and pipe (|) delimiters are supported. Select the correct one for your file before converting.
Yes. Click Upload CSV to select a .csv, .tsv, or .txt file from your device. The file is read locally and never uploaded to a server.
When 'First row is header' is checked, the first row is used as property names in the JSON objects. When unchecked, each row becomes an array of values.
Yes. All conversion happens in your browser. Your CSV data is never sent to any server.
What is CSV to JSON?
A CSV to JSON converter transforms comma-separated values (CSV) data into JSON (JavaScript Object Notation) format. CSV is commonly used for spreadsheet data and database exports, while JSON is the standard format for web APIs and JavaScript applications. Our CSV to JSON converter automatically detects headers, supports custom delimiters, and produces clean, formatted JSON output.
How to Use CSV to JSON
- 1Paste your CSV data or upload a CSV file.
- 2The tool automatically detects the delimiter (comma, semicolon, tab).
- 3Toggle whether the first row contains headers.
- 4The JSON output is generated instantly.
- 5Copy or download the JSON result.
Key Features
- ✓Automatic delimiter detection (comma, semicolon, tab)
- ✓Header row support
- ✓Formatted JSON output
- ✓Copy and download options
Benefits
- →Convert spreadsheet data for use in web APIs
- →Transform database exports to JSON
- →Prepare data for JavaScript applications
Why Use Irreva for CSV to JSON?
Frequently Asked Questions
What delimiters are supported?
Comma (,), semicolon (;), and tab delimiters are supported. The tool auto-detects the delimiter in most cases.
What happens if my CSV has no headers?
Toggle off the First row is header option and the tool will use numeric keys (0, 1, 2...) for each column.
Is my data sent to a server?
No. All CSV to JSON conversion happens in your browser. Your spreadsheet data is parsed by JavaScript running in your tab  it never leaves your device.
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