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CSV to JSON — Convert Online Free

Paste CSV data and convert it to a JSON array of objects or arrays. Instantly. No sign-up required.

Format the JSON?

Pretty-print the output

How to csv to json

  1. 1.Paste your CSV data into the input text area
  2. 2.Select whether the first row contains headers and choose the delimiter
  3. 3.Click 'Convert' to generate the JSON output
  4. 4.Click 'Copy' to copy the JSON or 'Download .json' to save it as a file

About This Tool

Converting CSV to JSON is essential when importing spreadsheet or tabular data into web applications, APIs, or NoSQL databases that work with JSON natively. This tool parses your CSV input and produces a clean JSON array that is ready to use in your code or import into your data pipeline.

The converter supports multiple delimiters including comma, tab, semicolon, and pipe to accommodate different CSV dialects. When the first row is marked as a header row (the default), the output is a JSON array of objects where each key comes from the header. Without headers, you get a JSON array of arrays. Quoted fields and escaped characters are handled according to standard CSV conventions.

All processing happens locally in your browser. Your CSV data is never sent to a server, making this CSV to JSON converter safe for sensitive spreadsheets, financial data, and internal reports. There are no file size limits and no account required.

Frequently Asked Questions

The tool supports comma, tab, semicolon, and pipe as delimiters. Select the one that matches your CSV format from the dropdown before converting.

Uncheck the 'Has header row' option and the tool will output a JSON array of arrays. Each inner array represents one row of data with values in their original column order.

Fields enclosed in double quotes are properly parsed. Commas and newlines inside quoted fields are preserved as part of the value, and escaped double quotes ("") are converted to single double quotes.

All values are kept as strings to preserve the original data exactly. If you need numbers or booleans, you can post-process the JSON in your application code.

No. All conversion happens locally in your browser. Your CSV data is never sent to any server and is not stored or logged.

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