Free CSV to JSON Converter

Turn CSV with headers into a clean JSON array of objects — quoted fields and embedded commas handled.

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Runs entirely in your browser — paste text and watch the results update instantly. Nothing is uploaded.

100% Client-Side — Your text stays in your browser. Nothing is uploaded.

How to use this tool

  1. 1

    Paste CSV with headers

    Export from sheets, CRMs or databases with a first header row.

  2. 2

    Pick delimiter & style

    Auto/comma/semicolon/tab input, and pretty or minified JSON output.

  3. 3

    Copy the result

    Paste the JSON into code, APIs or storage.

Key features

CSVJSON
name,age\nAli,30[{"name":"Ali","age":"30"}]
"Ali, the dev",30Comma inside quotes stays one field
Duplicate headersInline error — ambiguous keys
Empty rowsSkipped or empty-object handled

Privacy: your text never leaves your browser

Every Toolflect Text Tool is 100% client-side. The moment you type or paste text, it is analyzed by JavaScript running inside this browser tab. Your text is never sent to our servers, never stored in a database, and never shared with any third party or AI service.

  • No uploads, no accounts, no sign-up
  • No cookies or tracking of your text
  • Works offline once the page has loaded
  • Close the tab and your text is gone from memory

You can even verify it yourself: open your browser's developer tools, switch to the Network tab, and type into the tool — the only requests you will ever see are this page's own static files (HTML, CSS, JavaScript). Nothing you type is ever transmitted.

Frequently asked questions

How are headers handled?
The first row becomes object keys; each following row becomes one object.
Are values typed?
All CSV fields are strings by default — keep that in mind for numbers, or coerce after conversion.
What if headers repeat?
Duplicate column names are rejected with an inline error to avoid silent data loss.
Does anything leave the browser?
No — conversion is 100% local.

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