Paste or upload a CSV file and convert it to a JSON array - choose your delimiter, handle quoted fields and download the result.
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are the two most common data interchange formats in modern software development. CSV, standardised in RFC 4180, has been used since the early 1970s in mainframe data exports and spreadsheet applications. JSON, formalised by Douglas Crockford in the early 2000s, became the dominant format for web APIs because it maps directly to JavaScript objects - making it the default format for REST APIs powering platforms like Zomato, Swiggy, Paytm and virtually every Indian fintech application built after 2010.
Government open data portals in India - including data.gov.in, which hosts over 3.5 lakh datasets from ministries and state governments - typically publish datasets in CSV format. Developers building dashboards, mobile apps or data pipelines must convert this CSV data to JSON to feed it into frontend frameworks (React, Vue) or backend APIs (Node.js, Django). Data analysts processing GST return data, SEBI filings or election commission voter data downloaded as CSV also routinely convert to JSON before importing into MongoDB or Firebase.
Paste or upload any CSV with a header row and this converter reads the headers as JSON keys. Each subsequent row becomes a JSON object in an array - or optionally a flat array of values. The tool handles quoted fields containing commas, escaped quotes and Windows-style line endings (CRLF), which are common in Excel exports from Indian corporate accounting software like Tally and Busy. No data is uploaded to any server - conversion happens entirely in your browser.
[{"name":"Alice","age":"30"}] - each row becomes an object with named keys from the header. Array of Arrays produces [["Alice","30"]] - plain arrays without keys. Use Array of Objects for APIs and JavaScript apps; use Array of Arrays for matrix operations.