Convert CSV to JSON

Paste your CSV on the left and this tool converts it to JSON instantly, right in your browser. CSV is a flat, tabular format that opens directly in Excel, Google Sheets, and database import tools. JSON (JavaScript Object Notation) is the lingua franca of web APIs — compact, strictly typed, and supported everywhere.

The conversion is completely client-side — there's no upload, no queue, and no account. Copy the JSON output or download it as a file, and convert as many documents as you like.

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CSV to JSON Converter — frequently asked questions

How do I convert CSV to JSON?
Paste or type your CSV in the left panel and the JSON appears on the right instantly. Copy it with one click or download it as a file. Everything happens in your browser.
Does it use the first row as headers?
Yes. The first CSV row is treated as the column names, and each following row becomes a record keyed by those names. Numbers and booleans are detected and typed automatically.
Is my data uploaded to a server?
No. The conversion runs entirely in your browser with JavaScript — your data never leaves your device, so it's safe to convert configuration, API payloads, and other sensitive files. You can even go offline once the page has loaded.
Is this converter really free?
Yes. No sign-up, no payment details, no file-size paywall, and no watermark on the output. A single unobtrusive ad slot covers hosting.

All format converters

JSONYAMLJSONXMLJSONCSVYAMLJSONYAMLXMLYAMLCSVXMLJSONXMLYAMLXMLCSVCSVYAMLCSVXML

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