CSV ↔ JSON
Convert CSV to JSON array or JSON to CSV instantly in your browser.
About CSV ↔ JSON
Convert CSV to JSON array or JSON to CSV instantly in your browser.
CSV ↔ JSON converts spreadsheet style rows into a clean array of objects and back again without leaving your browser. Paste comma separated values with a header line and the tool infers each column's data type, so numbers, booleans, empty cells and quoted strings arrive in the JSON output as proper typed values instead of everything becoming text. In the other direction, paste a JSON array and receive well formed CSV with correctly escaped commas, quotes and line breaks. Delimiter detection handles tabs and semicolons, you can pick a custom separator, choose between indentation levels, and toggle whether empty fields become null or an empty string. Rows are validated line by line with clear error messages that point to the offending record, making it a dependable helper for cleaning exports before importing them into a database.
How to Use CSV ↔ JSON
- Paste or type your text into the editor.
- Watch the stats or output update instantly as you type.
- Adjust any options (case, delimiters, formatting) if needed.
- Copy the result with one click when you are done.
Key Features
- Live output on every keystroke — no submit button to wait for.
- Handles essays, articles and long documents with ease.
- One-click copy for the finished text or statistics.
Frequently Asked Questions
How does the CSV ↔ JSON tool decide each column's data type?
It inspects the first rows of your data and then every following record: a value that parses as a number becomes a number, true or false become booleans, an empty cell becomes null or an empty string as you choose, and anything else stays quoted text. You can override the guess per column from the header menu before converting.
Is CSV ↔ JSON free to use?
Yes. CSV ↔ JSON is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. CSV ↔ JSON runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does CSV ↔ JSON work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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