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CSV to JSON Converter

Convert CSV data to JSON - with delimiter selection and header detection

CSV Input
Result

What is CSV to JSON Conversion?

CSV (Comma-Separated Values) is a simple tabular format where values are separated by delimiters like comma, semicolon, or tab. JSON (JavaScript Object Notation) is a structured data format widely used in web APIs and modern applications. Converting CSV to JSON is particularly useful when tabular data needs to be processed in APIs or web applications. This conversion bridges the gap between spreadsheet-based data and the structured formats that modern web services expect.

How do I use the CSV to JSON Converter?

Paste your CSV data into the left text field. Select the appropriate delimiter (comma, semicolon, or tab) and enable the "First row as header" option if your first row contains column names. Click "Convert" and the result appears as formatted JSON in the right field. You can copy the result directly to your clipboard with the copy button.

Why convert CSV to JSON online?

Our converter runs entirely in your browser - your data is not sent to any server. This is ideal for sensitive business data or API test data. You need no Python script or Excel plugin. The converter also correctly handles special characters, umlauts, and quoted fields in CSV data, producing clean, valid JSON output every time.

More Tools

Also try our JSON to CSV Converter for the reverse direction, the JSON Formatter for formatting, or the JSON Generator for test data.

Frequently Asked Questions

Which delimiters are supported?
You can choose between comma, semicolon (common in German Excel) and tab as delimiter.
Does it handle quoted fields with commas inside?
Yes, fields enclosed in double quotes are handled correctly even if they contain delimiter characters.
Is my CSV uploaded?
No, conversion happens locally in the browser. Your data stays private.
Can it use the first row as JSON keys?
Yes, with the 'First row as header' option each column name becomes a key in the resulting JSON objects.

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