Data
CSV ↔ JSON Converter
Convert CSV data into JSON arrays or objects with automatic header detection.
About CSV to JSON Converter
Our CSV to JSON Converter transforms flat tabular data into structured JavaScript Objects. It is a robust converter that handles complex quoting and delimiters, allowing you to seamlessly swap formats between CSV and JSON for web APIs or configuration.
Modernize your legacy data workflows by converting spreadsheets into web-native JSON. This allows frontend applications and NoSQL databases to consume your data easily. It handles both json to csv and vice-versa, making it the ultimate data tool for interoperability.
Paste your CSV content on the left or upload a file. Toggle "Header Row" if your first line contains field names. The tool will parse the data and output a clean JSON array on the right, ready for copy-pasting.
Under the Hood
CSV parsing is handled by `PapaParse`, a robust RFC 4180 compliant parser. It detects delimiters (comma, tab, pipe) naturally during the first pass. JSON conversion transforms logic maps rows to objects (using header row keys) or arrays. The reverse process (JSON to CSV) flattens nested objects where possible or stringifies them, ensuring that the tabular structure is preserved for Excel compatibility.