Curl to Fetch - free online tool

How to use the Curl to Fetch

1. Paste a curl command (copy from browser DevTools, Postman, or terminal).

2. The equivalent JavaScript fetch() code is generated instantly.

3. Copy the fetch code to use in your frontend or Node.js project.

What is it?

curl is the universal command-line HTTP client. API documentation often provides curl examples, and browser DevTools lets you copy any network request as curl. Converting these to fetch() is a common task when building JavaScript applications.

The fetch() API is the modern browser/Node.js standard for HTTP requests. It uses Promises and async/await, making it clean to use in modern JavaScript. This converter handles common curl flags: -X (method), -H (headers), -d/--data (request body), and URL extraction with or without quotes.

Example

curl Command

curl -X POST https://api.example.com/users -H "Authorization: Bearer token123" -H "Content-Type: application/json" -d '{"name":"Alice"}'

↓

fetch() Code

fetch("https://api.example.com/users", {
  method: "POST",
  headers: {
    "Authorization": "Bearer token123",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({"name":"Alice"})
})

Paste curl from browser DevTools (Network tab → right-click request → Copy as cURL) to instantly get fetch code.

Benefits

Convert API documentation curl examples to JavaScript fetch instantly

Most API documentation provides curl examples — get the equivalent fetch() call for browser or Node.js use in one click.

Preserve all headers, body, method, and auth from the curl command

Every flag — -H headers, -d body, -u auth, -X method — is correctly translated to the corresponding fetch option.

Start API integration from a verified, working curl command

Convert a curl call you've already tested to fetch and adapt it — rather than writing a fetch request from scratch and debugging.

Translate curl commands from Stack Overflow and GitHub issues

curl is the universal language of HTTP examples — convert any curl snippet to fetch without memorising the fetch API options.

Frequently asked questions

Where do I find curl commands for APIs?

In browser DevTools (Network tab → right-click a request → Copy as cURL), in API documentation (Stripe, Twilio, etc. always show curl examples), and in Postman (Code snippet generator).

Does this handle multipart form data?

Basic --data-raw and -d flags are supported. Complex multipart (-F) forms are not yet converted. For those, use the FormData API in JavaScript.