CSV to JSON Converter
Convert CSV and TSV spreadsheets to structured JSON instantly. Auto-detect delimiters, support custom headers, and preview before conversion.
CSV Input
JSON Output
Converted JSON will appear here
What is CSV to JSON Converter?
CSV to JSON Converter is a data transformation tool that converts comma-separated values CSV and tab-separated values TSV spreadsheet data into structured JSON array format. CSV and TSV are the lingua franca of data interchange between spreadsheets Excel Google Sheets databases BI tools and data pipelines but many modern REST APIs JavaScript applications NoSQL databases and configuration systems expect JSON instead. This converter auto-detects the delimiter comma tab semicolon pipe treats the first row as column headers by default with configurable header row number correctly handles quoted values containing embedded delimiters and newlines per RFC 4180 and supports flattening nested JSON or keeping hierarchical structure. Preview the first fifty rows of converted JSON before processing the entire file handle multi-megabyte CSV uploads entirely in browser memory and configure output as either an array of objects keyed by header name or an array of arrays for more compact representation.
When to Use CSV to JSON Converter
Use when importing spreadsheet data into JavaScript apps, converting Excel exports for REST APIs, loading CSV into MongoDB/Firebase, preparing data for visualization libraries, or batch-transforming tabular data.
How to Use CSV to JSON Converter
Paste CSV/TSV text or upload a .csv file. Adjust delimiter, header row, and output format settings. Preview the conversion result, then copy the JSON or download it as a file.
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