Free CSV to JSON Converter

Convert CSV data to JSON format instantly. Paste your CSV text or upload a file. 100% client-side — your data never leaves your browser.

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Drag & drop a CSV file here or click to browse

Or paste CSV text in the input area below

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CSV Input

JSON Output

Delimiter

First Row

How to Convert CSV to JSON

Paste your CSV data into the input box or upload a .csv file.

Choose your delimiter and whether the first row contains headers.

Click Convert and copy or download the JSON output.

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Your data is processed locally in your browser. Nothing is uploaded to any server.

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Get your JSON output immediately. No waiting, no limits.

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Support for comma, tab, semicolon, and pipe delimiters.

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Works on desktop, tablet, and mobile browsers.

Is this CSV to JSON converter free?

Yes, completely free with no registration required.

Is my data secure?

Yes, all processing happens in your browser. Your data never leaves your device.

What delimiters are supported?

We support comma, tab, semicolon, and pipe delimiters.

Is there a file size limit?

Since processing is done in your browser, the limit depends on your device memory. Most files up to 50MB work fine.