Transform CSV data into clean JSON format instantly | 100% Client-side | No data leaves your device
CSV (Comma-Separated Values) is a simple file format used to store tabular data, such as spreadsheets or databases. JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. Converting CSV to JSON is essential when working with modern web APIs, JavaScript applications, and NoSQL databases.
Our tool offers 100% client-side processing – your data never leaves your browser. It supports custom delimiters (comma, semicolon, tab, pipe, space), auto-detects data types (numbers, booleans, null), handles quoted fields and escaped quotes, and allows you to use first row as headers or generate default column names. Perfect for developers, data analysts, and anyone working with data conversion.
No. All processing happens entirely in your browser using JavaScript. Your CSV data never leaves your device. Everything is 100% client-side.
Our CSV to JSON converter supports comma (,), semicolon (;), tab (\\t), pipe (|), and space ( ) delimiters.
Yes. The converter properly handles quoted fields, including escaped quotes (\"\" inside quoted fields) and line breaks within quoted values.
The tool auto-detects numbers, booleans (true/false), null values, and strings. You can disable auto-detection if you want to preserve all values as strings.