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CSV ↔ JSON Converter
Convert CSV data to JSON or transform JSON arrays into CSV.
Conversion direction
Choose the source and destination data formats.
Convert tabular data
Paste or import CSV or JSON, then convert it into the opposite format.
CSV and JSON files are processed entirely inside your browser. Imported data is never uploaded.
About this tool
What is CSV ↔ JSON Converter?
A CSV and JSON converter helps move tabular data between spreadsheet-friendly CSV files and structured JSON documents. BigForgeKit performs both conversions locally and supports importing and downloading files.
Features
Built for fast developer workflows
- Convert CSV rows into formatted JSON objects.
- Convert JSON arrays and objects into CSV.
- Automatically detect common CSV delimiters.
- Import CSV and JSON files from your device.
- Preview converted tabular data.
- Download results without uploading source data.
Frequently asked questions
Questions about CSV ↔ JSON Converter
Does the CSV need a header row?
CSV-to-JSON conversion treats the first row as column headers. Each following row becomes an object whose properties use those header names.
What JSON structure can be converted to CSV?
The converter accepts an array of objects, an array of arrays, or a single plain object. Nested objects are kept as serialized values rather than expanded into multiple columns.
Are uploaded files sent to a server?
No. Files are read and converted locally by your browser.
How are commas inside CSV values handled?
Properly quoted CSV values may contain commas, line breaks and quotation marks. The parser handles these according to standard CSV escaping rules.
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