cURL to Fetch Converter

What does the cURL to fetch converter do?

API documentation, browser dev tools, and tools like Postman all export requests as cURL commands — but your JavaScript code needs fetch(). This converter parses the cURL command line (method, URL, headers, cookies, auth, body, form data) and emits an equivalent fetch() call you can paste straight into your frontend or Node.js code.

Conversion happens locally in your browser. Commands that contain API keys or session cookies are never transmitted anywhere, though you should still rotate any credentials you paste into shared links or docs.

When to use it

The classic workflow: open your browser's Network tab, right-click a request, choose "Copy as cURL", paste it here, and get working JavaScript that reproduces the request — headers, body and all. That's the fastest way to turn "it works in the browser" into "it works in my script".

It's equally useful going from API docs to code: most REST API references give examples in cURL only. Instead of hand-translating -H flags and --data payloads (and inevitably typo-ing a header name), convert the whole command in one step. JSON bodies are detected and emitted as structured code rather than an opaque string.

Example

Paste curl -X POST https://api.example.com/v1/items -H 'Authorization: Bearer TOKEN' -H 'Content-Type: application/json' -d '{"name":"Widget"}' and you get a fetch() call with a method, a headers object, and a JSON body — ready to await. If you need axios instead, there's a companion cURL to Axios tool with the same behavior.