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.
A CSV to JSON converter is a tool that transforms tabular data (Comma-Separated Values) into a structured JavaScript Object Notation (JSON) array. This makes it easier to use spreadsheet data in web applications and APIs.
No. All processing happens entirely in your browser using JavaScript. Your CSV data never leaves your device. Everything is 100% client-side, ensuring complete data privacy.
Our CSV to JSON converter supports comma (,), semicolon (;), tab (\t), pipe (|), and space ( ) delimiters. You can easily switch between them in the options menu.
Yes. The converter uses an advanced parser that properly handles quoted fields, including escaped quotes ("" inside quoted fields) and line breaks within quoted values.
The tool automatically detects numbers, booleans (true/false), null values, and strings. You can disable the auto-detection feature if you prefer to preserve all cell values strictly as strings.
You can safely upload and parse CSV files up to 10MB. Because the tool runs in your browser, very large files might slow down your device temporarily.