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cURL to Code Converter

Code

Convert a cURL command into Python requests, JavaScript fetch, or Node.js axios code instantly. Paste any cURL command and get working code in your language.

Reviewed by the thecalcu.com team · Last updated July 1, 2026

What is a cURL→Code?

A cURL to Code Converter translates a cURL command, the format most API documentation and browser developer tools use to describe an HTTP request, into working code in Python, JavaScript, or Node.js. cURL commands are a convenient universal format for describing a request (URL, method, headers, body), but they're not directly usable inside an application; you need to rewrite them using your language's actual HTTP client.

This converter handles that translation automatically. Paste a cURL command copied from API docs or a browser's Network tab, pick your target language, and get a ready-to-run snippet using requests in Python, fetch in JavaScript, or axios in Node.js. It pairs well with the JSON Formatter for cleaning up the request body before or after conversion.

Why Use a cURL to Code Converter?

API documentation overwhelmingly shows example requests as cURL commands, since cURL is a universal, language-agnostic way to describe an HTTP call. But if you're integrating that API into a Python script, a Node.js backend, or a frontend JavaScript app, you still have to manually translate every header, the request body, and the authentication into your language's syntax, a repetitive task that's easy to get slightly wrong, especially with escaped quotes inside a JSON body.

This converter eliminates that manual translation. A developer testing a payment API's example cURL command can instantly get equivalent Python code to drop into a script, instead of hand-typing the headers dictionary and risking a typo in an API key header name. It's especially useful when working through documentation for APIs like Stripe, Twilio, or any REST API that only provides cURL examples.

Who Should Use This Converter?

  • Backend developers integrating a third-party API who only have a cURL example from the documentation and need working code in their language.
  • Frontend developers converting a cURL command copied from the browser's Network tab into a fetch call to replicate a request in their application.
  • QA engineers and API testers quickly turning a cURL command from a bug report into a runnable script to reproduce an issue.
  • Students learning HTTP requests who want to see how the same request looks across cURL, Python, and JavaScript syntax.
  • Anyone documenting an API integration who wants to provide working code examples in multiple languages from a single cURL reference.

What Insights Does the cURL to Code Converter Give You?

The converter breaks down a cURL command into its component parts and reassembles them as idiomatic code:

  • URL and method, extracted directly from the command and placed correctly for the target language's HTTP client syntax.
  • Headers, every -H flag becomes a properly formatted key-value entry in the language's headers object or dictionary.
  • Request body, data passed via -d or --data becomes the body parameter in the generated code.
  • Basic authentication, credentials from -u are translated into the target language's equivalent auth mechanism (a tuple in Python, an auth object in axios).

Seeing the same request broken down this way also helps you understand exactly what a cURL command is doing, which is useful even if you don't need the generated code for anything beyond verification.

How to use this cURL→Code calculator

  1. Copy a cURL command from API documentation or your browser's Network tab ("Copy as cURL").
  2. Paste it into the cURL Command field, multi-line commands with trailing backslashes are handled automatically.
  3. Select your Target Language, Python (requests), JavaScript (fetch), or Node.js (axios).
  4. Read the generated code in the result panel.
  5. Copy the code and paste it into your script or application.
  6. Replace any real API keys or tokens with environment variables before committing or sharing the code.
Show formula & methodology ↓Show less ↑

Formula & Methodology

The converter tokenises the cURL command (correctly handling quoted strings and line continuations), then extracts the URL, method, headers, body, and basic auth credentials before generating idiomatic syntax for the chosen language.

Before (cURL):
curl -X POST https://api.example.com/users \\   -H "Content-Type: application/json" \\   -d '{"name": "Asha"}'

After (Python):
python import requests  url = 'https://api.example.com/users' headers = {     'Content-Type': 'application/json', } data = '{"name": "Asha"}'  response = requests.request('POST', url, headers=headers, data=data) print(response.status_code) print(response.text) 

The method defaults to POST whenever a request body is present and no explicit -X flag overrides it, matching cURL's own default behaviour.

Frequently Asked Questions

What is a cURL to code converter?
A cURL to code converter takes a cURL command, the kind you'd copy from a browser's Network tab or an API's documentation, and translates it into working code in a programming language like Python, JavaScript, or Node.js. Instead of manually rewriting the URL, headers, and request body into your language's HTTP client syntax, the converter does it instantly.
Where do I get a cURL command to convert?
Most API documentation includes example cURL commands you can copy directly. You can also get one from your browser's developer tools, open the Network tab, right-click any request, and choose 'Copy as cURL' to grab the exact request your browser made.
What request details does this converter handle?
The converter parses the URL, HTTP method (from -X or --request), headers (from -H or --header), request body (from -d, --data, or --data-raw), and basic authentication (from -u or --user). These cover the vast majority of API request patterns found in real-world documentation.
Why does the output default to POST when no method is specified?
cURL itself defaults to GET unless a request body is provided, in which case it automatically switches to POST. This converter follows the same rule, if your command includes a `-d` or `--data` flag without an explicit `-X`, the generated code uses POST to match cURL's actual behaviour.
Does this support multi-line cURL commands with backslashes?
CURL commands copied from documentation or a terminal often span multiple lines using a trailing backslash (\) for readability. The converter handles these line continuations automatically, so you can paste the command exactly as copied.
What's the difference between the Python, JavaScript, and Node.js output?
Python output uses the popular `requests` library, JavaScript output uses the browser-native `fetch` API, and Node.js output uses the `axios` library, three of the most common ways developers make HTTP requests in each environment. Pick whichever matches the environment you're working in.
Do I need to install anything to use the generated code?
Python's `requests` and Node.js's `axios` are both external packages that need installing (`pip install requests` or `npm install axios`), while the JavaScript `fetch` output works natively in modern browsers and recent Node.js versions with no extra installation.
Is my cURL command sent anywhere when I use this converter?
No, the parsing and code generation happen entirely in your browser using JavaScript. Your cURL command, including any tokens or credentials it contains, is never transmitted or stored anywhere.
Why might the generated code not work exactly as expected?
Some advanced cURL flags, like file uploads (-F), client certificates, or proxy settings, aren't translated since they require different handling per target language. For the common case of headers, a JSON or form body, and basic auth, the generated code should run with little to no modification.
Should I remove authentication tokens before sharing converted code?
Yes, if your cURL command includes a real API key, bearer token, or password, the generated code will contain that same credential. Replace it with an environment variable or placeholder before committing the code or sharing it publicly.
Also known as
curl to pythoncurl to fetchcurl to javascriptcurl to axiosconvert curl command