CSV to JSON Converter

Paste CSV data and get a typed JSON array — automatic number and boolean detection, header mapping and quote-aware parsing included. The quick bridge between spreadsheets and code.

100% free No uploads Runs in your browser No signup

CSV → JSON

Input

0 characters

Converted result

—

Flattens arrays of objects into spreadsheet rows: keys become the CSV header, values become cells. In the other direction, CSV values are auto-typed — numbers and booleans become real JSON types.

How to use the CSV to JSON Converter

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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