Use the CSV ⇄ JSON Converter
Free online CSV to JSON and JSON to CSV converter. Paste or upload a file, auto-detect the delimiter, preview the result as a table.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
CSV: name,age\nAna,30\nBen,25
JSON: [{"name":"Ana","age":"30"},{"name":"Ben","age":"25"}]
Open the CSV ⇄ JSON Converter
Illustration. Open the tool for the real thing.
What is the CSV ⇄ JSON Converter?
Spreadsheets export as CSV, but APIs and scripts usually need JSON — and going the other way is just as common when you need to open API data in Excel or Google Sheets. This tool detects which direction you need automatically: paste CSV and it produces an array of JSON objects using your header row as keys, or paste a JSON array of flat objects and it produces a CSV with those keys as columns.
It auto-detects common delimiters (comma, semicolon, tab) in CSV input, handles quoted fields containing commas or line breaks correctly, and shows a live table preview of the result so you can catch column mismatches before downloading. Nested JSON objects are flattened with dot notation so they still fit into CSV columns.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Paste CSV or JSON and it converts to the other format.
Handles comma, semicolon and tab-separated files.
See the converted data as a table before downloading.
Correctly parses commas and line breaks inside quoted CSV cells.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
No-code / automation builders
Reshape data between spreadsheet and JSON-based tools.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Is my data uploaded anywhere?
No, conversion happens entirely in your browser using JavaScript; nothing is sent to a server.
Does it handle commas inside quoted CSV fields?
Yes, standard CSV quoting with double quotes is parsed correctly, including embedded commas and line breaks.
What happens to nested JSON objects when converting to CSV?
They are flattened into dot-notation column names, for example address.city, so every value still fits into a flat spreadsheet cell.
Can I choose the CSV delimiter?
Yes, comma is the default but you can switch to semicolon or tab for regions or tools that expect those.
Are numbers preserved as numbers in JSON output?
Values that look like plain numbers are converted to JSON numbers automatically; anything with letters or leading zeros stays a string.
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Try the CSV ⇄ JSON Converter now
Convert CSV to JSON or JSON to CSV instantly in your browser. Free to use.
Try it free