Does the CSV need headers?

Yes. The first row of your CSV is used as the keys in the JSON objects. If your CSV has no headers, the converter will use the first data row as keys — add headers manually if needed.

What happens with commas inside CSV values?

CSV values containing commas should be wrapped in quotes in proper CSV format. The converter handles standard RFC 4180 CSV including quoted values with embedded commas.

Can I convert semicolon-delimited CSV?

Yes. European CSV exports often use semicolons instead of commas (since commas are used as decimal separators). Select 'Semicolon' as the delimiter for these files.

Will numbers and booleans be typed correctly in JSON?

The converter attempts to infer types — numbers are output as JSON numbers, 'true'/'false' as JSON booleans, and other values as strings. Review the output to verify type inference is correct.

What is the maximum CSV size?

The tool handles CSV data up to approximately 5MB. For very large CSV files (1M+ rows), command-line tools like csvkit or Python's pandas library are better suited.

Converters

Free

CSV to JSON Converter

Convert CSV data to JSON format with first-row header detection and nested object support.

CSV Input

What is CSV to JSON Converter?

The CSV to JSON Converter transforms comma-separated value (CSV) data into JSON format — converting the first row as object keys and subsequent rows as array elements. The output is a JSON array of objects, ready for use in APIs, JavaScript applications, and data processing workflows.

CSV is the standard export format from spreadsheets and databases. JSON is the standard format for modern APIs and web applications. This converter bridges them — turning spreadsheet exports into API-ready JSON without writing transformation code.

Why Use CSV to JSON Converter?

When importing data from spreadsheets into web applications, APIs, or databases, CSV data must be converted to JSON. This tool performs that transformation instantly, handling all edge cases like quoted values, commas within values, and varying column counts.

Key Features of CSV to JSON Converter

✓Converts CSV to JSON array of objects
✓Uses first row as JSON object keys
✓Handles quoted values and embedded commas
✓Custom delimiter support (comma, semicolon, tab)
✓Option to output as JSON object with keys

How to Use CSV to JSON Converter

1
Paste your CSV
Enter or paste the CSV data you want to convert.
2
Set delimiter
Choose comma, semicolon, or tab as the field separator.
3
Convert
Click 'Convert to JSON' to transform the data.
4
Review JSON output
Check that the JSON structure correctly represents your CSV data.
5
Copy or download
Copy the JSON or download as a .json file for use in your application.