CSV to JSON Converter
Convert between CSV and JSON formats instantly. Transform spreadsheet data to JSON arrays or JSON to CSV files.
Features
- ✓Convert CSV to JSON array of objects
- ✓Convert JSON array back to CSV format
- ✓Support for custom delimiters (comma, tab, semicolon)
- ✓Handle quoted values and escaped characters
- ✓Preserve data types where possible
- ✓Works offline - no data sent to servers
How to Use
- 1Select the conversion direction (CSV to JSON or JSON to CSV)
- 2Paste your CSV or JSON data in the input field
- 3Optionally select a custom delimiter for CSV
- 4Click Convert to transform your data
- 5Copy the converted output to your clipboard
Examples
Input
name,age,city John,30,New York Jane,25,Boston
Output
[
{ "name": "John", "age": "30", "city": "New York" },
{ "name": "Jane", "age": "25", "city": "Boston" }
]Input
[{"id":1,"product":"Widget","price":9.99},{"id":2,"product":"Gadget","price":19.99}]Output
id,product,price 1,Widget,9.99 2,Gadget,19.99
Input
name,description "Smith, John","A ""quoted"" value"
Output
[{ "name": "Smith, John", "description": "A \"quoted\" value" }]What is a CSV to JSON Converter?
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are two of the most common data interchange formats. CSV is widely used for spreadsheets, databases exports, and data analysis tools. JSON is the standard format for web APIs, configuration files, and JavaScript applications. Converting between them is a common task for developers and data analysts.
A CSV to JSON converter transforms tabular data into a structured JSON format. The first row of the CSV is treated as headers, and each subsequent row becomes a JSON object with keys matching those headers. This makes CSV data easy to use in web applications and APIs that expect JSON input.
The reverse conversion (JSON to CSV) takes an array of objects and flattens them into tabular format. All unique keys become column headers, and each object becomes a row. This is useful when you need to import API data into Excel, Google Sheets, or other spreadsheet applications.
Our converter handles edge cases like quoted values containing commas, escaped quotes within values, and inconsistent columns. It also supports different delimiters - while comma is standard, some regions use semicolons, and tab-separated values (TSV) are common in certain applications.
All conversion happens in your browser using JavaScript. Your data never leaves your computer, making it safe to convert sensitive information like customer data, financial records, or personal information. The tool works offline and has no file size limits beyond your browser's memory.