Convert CSV to JSON instantly
Convert CSV files to JSON format instantly in your browser. No upload needed - your data never leaves your computer. Free and private.
Drop your CSV file here
or click to browse
Example
Input (CSV)
name,email,age Alice,[email protected],30 Bob,[email protected],25
Output (JSON)
[
{ "name": "Alice", "email": "[email protected]", "age": "30" },
{ "name": "Bob", "email": "[email protected]", "age": "25" }
]About this converter
CSV is the universal export format. Every database, spreadsheet app, and reporting tool can spit out a CSV. But when you need that data in a web application, a REST API, or a NoSQL database like MongoDB, you need JSON. This converter reads your CSV headers as keys and transforms each row into a JSON object within an array, giving you a clean, ready-to-use data structure.
The parsing engine runs entirely in your browser using JavaScript. Your data never touches a server, never crosses a network boundary, and never lands on someone else's infrastructure. If you are working with customer records, financial exports, medical data, or anything covered by GDPR, HIPAA, or SOC 2, that distinction is not a nice-to-have. It is a requirement. Open your browser's Network tab during conversion and you will see zero outbound requests.
Edge cases are handled correctly. Quoted fields that contain commas, escaped double-quotes within values, line breaks inside quoted cells, and empty fields all parse as expected per RFC 4180. Values are output as strings by default since CSV has no type system. If you need numeric types, a quick post-processing pass in your code can handle that.
Common use cases include preparing data for API integration, migrating records between systems, feeding data into JavaScript applications, and transforming spreadsheet exports for import into document databases. If your workflow involves exporting from Excel or Google Sheets and importing into a JSON-based system, this is the bridge.
Need a different output format? You can also convert CSV to XML for enterprise systems or CSV to YAML for configuration files. Going the other direction? The JSON to CSV converter flattens JSON back into spreadsheet-friendly rows. If your source data is in Excel format, try XLSX to CSV first, then convert the CSV to JSON here.
CSV vs JSON
Comma-Separated Values (CSV)
CSV (Comma-Separated Values) is a plain-text format for storing tabular data where each line represents a row and values are separated by commas.
Common uses: spreadsheets, databases, and tabular data
RFC 4180 (CSV specification)JavaScript Object Notation (JSON)
JSON (JavaScript Object Notation) is a lightweight data format that is easy for humans to read and write, and easy for machines to parse and generate.
Common uses: APIs, web applications, and configuration files
ECMA-404 (JSON specification)How to convert CSV to JSON
- 1
Prepare your CSV file
Make sure your CSV has a header row with column names. The converter uses the first row as JSON keys for each object. If your file uses semicolons or tabs instead of commas, convert the delimiters to commas first.
- 2
Load the CSV into the converter
Drag and drop your .csv file onto the converter or click to browse. The file is read locally using the browser's FileReader API. Nothing is uploaded to any server.
- 3
Review the parsed JSON output
The converter displays the resulting JSON array of objects. Each CSV row becomes one JSON object with keys matching your header columns. Check that fields with commas, quotes, or special characters were parsed correctly.
- 4
Adjust and copy or download
Copy the JSON output to your clipboard for pasting into code, or download it as a .json file. The output uses clean formatting with proper indentation for readability.
- 5
Integrate into your workflow
Use the JSON output in API requests, import it into MongoDB or other document databases, or feed it into JavaScript applications. The array-of-objects format is the most common structure expected by web APIs and frontend frameworks.
Frequently Asked Questions
Last updated: 2026-03-23