CSV to JSON Converter - Free Online Tool, No Signup
Convert CSV spreadsheets to clean JSON instantly. Preview the output and copy or download the converted file.
Tool Interface
How to use
- Paste CSV or TSV text into the input box above. The delimiter (comma, semicolon, tab or pipe) is detected automatically from the first line.
- Keep First row is header switched on to turn the first row into JSON object keys. Switch it off for generic
column0,column1keys. - Keep Infer data types switched on to convert numeric values into numbers and
true/falseinto booleans. - Use Copy JSON to copy the result, or Download JSON to save it as a file.
Proper CSV quoting is supported: a field like "a, b" stays a single value, "" inside quotes becomes one literal quote, and line breaks inside quoted fields are preserved.
Your data never leaves your browser. This converter runs 100% client-side with no uploads and no tracking.
Need the reverse conversion? Try our JSON to CSV converter.
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About This Tool
Convert CSV Spreadsheets Into JSON Instantly
The CSV to JSON Converter turns comma-separated data into clean JSON with one paste. It auto-detects your delimiter — comma, semicolon, tab, or pipe — and handles proper CSV quoting, including commas inside quoted fields, escaped quotes, and line breaks within cells.
Toggle the first row as headers to generate named keys, or switch on type inference to convert numbers and true/false values into real JSON types instead of strings. Copy the result or download it as a .json file. The whole conversion runs 100% in your browser, so sensitive data never leaves your device.