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CSV to JSON Converter — Convert CSV to JSON Online

Convert CSV data from spreadsheets to formatted JSON. Configure delimiter (comma, semicolon, tab) and detect headers automatically. Download the result as a JSON file or copy directly.

Delimiter:

First row is headers

Input CSV

Output JSON

How to Use CSV to JSON Converter

Quick Start Guide

Paste your CSV data into the input box

Select the correct delimiter and whether the first row is headers

Click 'Convert to JSON' to process the data

Copy the pretty-printed JSON or download as a file

💡Pro Tips

✓Automatically detects number, boolean, and null values

✓Generates pretty-printed formatted JSON with proper indentation

✓Everything runs locally in your browser for privacy

✓Great for converting spreadsheet data to API-friendly JSON format

Frequently Asked Questions

Converting CSV to JSON is useful when you have tabular data from spreadsheets and need to import it into APIs, databases, or JavaScript applications that work with JSON format.

Yes, this converter properly handles CSV quoting rules. If a field contains commas and is wrapped in quotes, it will be correctly parsed as a single field in the resulting JSON.

Yes. All conversion happens 100% client-side in your browser. Your CSV data never gets uploaded or sent to any server, so privacy is guaranteed.

If your CSV doesn't have headers, just turn off the 'First row is headers' option. The converter will automatically name columns as column1, column2, and so on.

Still have questions? Check out our other tools or contact us for support.

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