CSV to JSON Converter
Turn spreadsheet data into clean JSON.
APIs speak JSON, spreadsheets speak CSV, and moving between them by hand is error prone. Paste your CSV, and this tool reads the first row as headers and turns every following row into a JSON object, with numbers and booleans detected automatically. Copy the result or download it as a .json file. Everything runs in your browser, so your data never leaves the device.
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About CSV to JSON Converter
CSV is the format spreadsheets and data exports use, while JSON is the format APIs and web apps expect. Moving a table from one to the other by hand means retyping headers and fixing quoting mistakes. This converter does it in one step: the first row becomes the keys, and every following row becomes an object.
Real-world CSV is messier than the simple case. Fields can contain commas inside quotes, quotes escaped by doubling them, and even line breaks inside a quoted cell. The parser here handles all three, so exports from Excel, Sheets, and databases come through intact. Numbers and true/false values are detected and typed automatically, with an option to keep everything as strings.
The output is a JSON array of objects, ready to paste into code, an API test, or a config file.
How to use CSV to JSON Converter
- Paste CSV data or drop a .csv file.
- Confirm the delimiter and header row options.
- Click Convert to get JSON.
- Copy the output or download it as a .json file.
Why use this tool?
- Handles quoted commas, quotes, and line breaks
- Detects numbers and booleans automatically
- Copy or download the JSON output
- Free with no account or signup
Tips for best results
- If columns look wrong, check the delimiter: some exports use semicolons.
- Keep the header row option on unless your file truly has no headers.
- Turn off number detection if IDs like 00123 must stay as text.
- Use the JSON Formatter next to validate or beautify the output.