CSV ↔ JSON Converter
Convert between CSV and JSON formats. Auto-detect delimiters, customizable options. Bidirectional conversion with statistics.
CSV vs JSON
CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are two of the most common data exchange formats. CSV excels at tabular data and is universally supported by spreadsheets, while JSON handles nested structures and is the standard for web APIs.
Paste your CSV or JSON data, select the conversion direction, and get instant results. The tool auto-detects delimiters (comma, tab, semicolon, pipe) and provides row/column statistics. Toggle the header row option to control whether the first CSV row is treated as column names.
CSV to JSON conversion is needed for importing spreadsheet data into web applications, migrating database exports to API-compatible formats, processing Excel/Google Sheets data in JavaScript, building data visualizations from tabular sources, and loading CSV datasets into NoSQL databases.
CSV is simple but limited to flat, tabular data. JSON supports nested objects, arrays, and typed values (numbers, booleans, null). When converting CSV to JSON with headers, each row becomes an object with column names as keys. Without headers, each row becomes an array of values.