How to Convert CSV to JSON

Convert CSV data to JSON format instantly. Free online tool that handles headers, custom delimiters, and large files. No upload required.

Step-by-Step Guide

Paste your CSV data into the input area. The first row is automatically detected as headers and used as JSON keys.

Set the delimiter (comma, tab, semicolon, or custom). Choose whether the first row is headers or data.

The JSON output appears in real-time as you edit. Each CSV row becomes a JSON object with header names as keys.

Copy the JSON to your clipboard or view it formatted with syntax highlighting. Ready to use in your code or database import.

No signup, no download. Runs entirely in your browser.

What delimiters are supported?

Comma, tab, semicolon, pipe, and custom delimiters. The tool auto-detects the most likely delimiter.

Can it handle large CSV files?

Yes. Processing happens entirely in your browser, so files with thousands of rows work fine without uploading anything.

What about special characters in CSV?

Quoted fields, escaped quotes, newlines within fields, and Unicode characters are all handled correctly following RFC 4180.

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