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CSV ↔ JSON Converter

Turn a CSV into a clean JSON array of objects — or go the other way and build a CSV from JSON. Robust parsing, one click to copy or download.

🔒 Runs privately in your browser — nothing is uploaded
CSV input 📎 Upload .csv
🛡️ Your text is read only in your browser. It never touches a server — not even ours.
JSON output

How to convert CSV to JSON

  1. Keep the direction on CSV → JSON (or switch to JSON → CSV to reverse it).
  2. Paste your CSV into the box, or click Upload .csv to load a file.
  3. Pick the delimiter (auto-detect works for most files) and confirm whether the first row is a header.
  4. Click Convert, then Copy or Download. Your data is processed privately and never uploaded.

Why convert between CSV and JSON?

CSV is what spreadsheets and exports speak; JSON is what APIs, config files and JavaScript apps expect. Converting between them is a daily job for developers, analysts and anyone wiring one system to another. This tool does it instantly in the browser — no sign-up, no upload, and your data never leaves the page.

Common uses

Prepare seed data for an app, feed a spreadsheet export into an API, tidy a messy CSV into structured objects, or flatten a JSON response back into a table for Excel or Google Sheets. Because the parser follows the CSV standard, fields with commas, line breaks or quotation marks inside them survive the round trip intact.

Frequently asked questions

Is my file uploaded to a server?

No. Everything happens inside your browser, so your data is never uploaded — completely private.

Does it handle quoted fields with commas or newlines?

Yes. The built-in parser understands double-quoted fields, commas and line breaks inside quotes, and escaped double-quotes (""), so complex CSVs convert correctly.

What does JSON → CSV expect?

Give it a JSON array of objects, for example [{"name":"Asha","city":"Pune"}]. The tool collects every key across all objects to build the header row, then writes one line per object.

Does it work on mobile?

Yes — it works on any modern phone or computer browser, and can be installed as an app for offline use.