Free CSV to JSON Converter
Turn a CSV export into a clean JSON array, or flatten a JSON array back into CSV. It handles quoted fields, different delimiters and header rows, and runs entirely in your browser, so nothing is uploaded.
Handy for a quick conversion or a data check. Confirm the result before you load it into a live system.
Convert your data in four steps.
Pick a direction, paste or upload your data, set the options, then copy or download the result. Everything updates as you type.
Pick a direction
Choose CSV to JSON to turn a spreadsheet export into JSON, or JSON to CSV to flatten a JSON array back into rows.
Paste or upload
Paste your data into the box, or upload a .csv, .txt or .json file. Everything stays on your device.
Set the options
Pick the delimiter, say whether the first row is a header, and choose pretty-printed output. The result updates as you type.
Copy or download
Copy the output in one tap, or download it as a .json or .csv file, ready to use in your code or spreadsheet.
A converter that gets the details right.
CSV looks simple until a value has a comma or a line break in it. This tool follows the real rules, both ways, so your data comes through intact.
Both directions
CSV to JSON and JSON to CSV in one tool. Flip the direction and your last result carries over, so you can round-trip in a click.
Handles the tricky cases
A proper RFC 4180 parser, so quoted fields, commas and line breaks inside a value, and doubled quotes all come through correctly.
Delimiter and header options
Comma, semicolon or tab, detected automatically or set by hand. Say whether the first row is a header, and optionally read numbers and true or false as real values.
Private by design
It runs entirely in your browser. Nothing you paste or upload is sent to a server, so even sensitive exports stay on your own machine.
Data that moves on its own.
A converter is great for a one-off file. But if your team imports and exports CSV every day, mapping columns, validating rows and syncing to a database, that work belongs inside your own software. That is the kind of data tooling, integrations and ERP work we build at Techliphant, shaped around how your business actually runs.
Need words from numbers too? Try the number to words tool.
Common questions.
Paste your CSV into the box or upload a file, keep the direction on CSV to JSON, and the tool reads the first row as the column names and turns each following row into a JSON object. You get a JSON array you can copy or download straight away.
Switch the direction to JSON to CSV and paste a JSON array of objects. The tool works out the columns from the keys across every object, writes a header row, and turns each object into a row. You can then copy the CSV or download it as a file.
Yes. The parser follows the RFC 4180 rules, so a value wrapped in double quotes can contain commas, line breaks and even doubled quotes ("") without breaking the columns. When writing CSV, any field that needs quoting is quoted for you.
Yes. Leave the delimiter on Auto and the tool guesses from your first line, or set it to comma, semicolon or tab yourself. Semicolons are common in exports from spreadsheets set to some European locales.
Turn off the "first row is a header" option. The tool then gives you a JSON array of arrays instead of a JSON array of objects, keeping every row as data.
Yes. Turn on "read numbers and booleans" and a value like 85000 becomes a JSON number and true or false becomes a JSON boolean. Turn it off to keep every value as text, which is safer for things like ID codes with leading zeros.
CSV is a flat, table shape, so a nested object or array inside a field is written into the cell as its JSON text rather than spread across more columns. For deeply nested data you usually want a custom mapping, which is the kind of thing we build.
No. The whole thing runs in your browser using JavaScript. Nothing you paste or upload leaves your device, so it is safe to use with private or internal data.
There is no fixed limit, but very large files depend on your device memory since the work happens locally. For a few thousand rows it is instant. For huge datasets or a repeatable pipeline, a small script or a built-in import feature is a better fit.
Yes. A one-off converter is handy, but if your team imports and exports CSV every day, mapping columns, validating rows and syncing to a database, that belongs inside your own software. That is the kind of data tooling and integration work we do at Techliphant.
Private by design: this converter runs entirely in your browser, so nothing you paste or upload is sent anywhere or stored. Your data stays on your own device. It is provided free for quick conversions and everyday use.
Ready when you are
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