CSV to JSON

Convert CSV data to JSON and back.

🔒 This file is processed in your browser. It is never uploaded anywhere.

…

How it works

  1. Paste your CSV data (comma-separated values), with the first row as the header.
  2. Click "CSV → JSON" to convert it, or "JSON → CSV" for the reverse.
  3. Copy the converted result.

Frequently asked questions

What if my data uses semicolons instead of commas?

This tool expects commas as the separator; if your CSV uses semicolons, replace them with commas before pasting (watch out if the content itself contains commas).

Does it work with very large CSV files?

It works with anything that fits when pasted into the text box; for very large files the browser may take a few seconds.

Related tools

Word counterCount words, characters and paragraphs in a text.JSON formatterFormat and validate JSON, with error detection.Base64 encoderEncode or decode text as Base64.URL encoderEncode or decode text for use in URLs.