cURL to Code Converter – Python, JavaScript, Go, PHP

API documentation and AI playgrounds (OpenAI, Anthropic, etc.) often provide cURL examples. Copy-pasting a cURL command is quick for testing — but integrating that request into your application usually requires rewriting it in your language of choice. A cURL-to-code converter automates that translation.

In this guide, we cover why cURL conversion matters, what gets translated, and how to use an online converter effectively.

1. What Does a cURL Converter Do?

A cURL command encodes an HTTP request: method, URL, headers, and body. A converter parses that command and outputs equivalent code in your target language:

• Python — requests or httpx
• JavaScript — fetch
• Go — net/http
• PHP — curl extension

The converter preserves method, URL, headers (including Authorization, Content-Type), and request body. JSON bodies are correctly serialized.

2. Why Use a cURL Converter?

• Save time — no manual translation of headers and body
• Reduce errors — avoid typos when copying Authorization tokens or JSON
• Integrate AI APIs — OpenAI, Claude, and others provide cURL examples; convert to your stack quickly
• Learn by example — see how a cURL command maps to your language

3. Implementation: Parsing cURL

Step 1: Tokenize the command (respect quotes and backslash escapes):

function tokenizeCurl(input) {
  const s = input.replace(/\\\n/g, ' ').trim();
  const tokens = [];
  let cur = '', quote = null;
  for (let i = 0; i < s.length; i++) {
    const ch = s[i];
    if (quote) {
      if (ch === quote) quote = null;
      else if (ch === '\\' && quote === '"' && i + 1 < s.length)
        { cur += s[++i]; continue; }
      else { cur += ch; continue; }
    } else if (ch === '"' || ch === "'") quote = ch;
    else if (/\s/.test(ch)) { if (cur) tokens.push(cur); cur = ''; }
    else cur += ch;
  }
  if (cur) tokens.push(cur);
  return tokens;
}

Step 2: Parse flags. Look for -X/--request (method), -H/--header (headers), -d/--data (body). The URL is often the last token matching /^https?:\\/\\//.

Step 3: Convert to target language. For Python with JSON body:

// If body looks like JSON (starts with { or [), use json= in requests
if (isJson && body) {
  const payload = JSON.parse(body);
  return `response = requests.${method.toLowerCase()}("${url}", headers=headers, json=payload)`;
} else {
  return `response = requests.${method.toLowerCase()}("${url}", headers=headers, data='${body}')`;
}

4. Example: OpenAI cURL to Python

# cURL
curl -X POST "https://api.openai.com/v1/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-..." \
  -d '{"model":"gpt-4o","messages":[{"role":"user","content":"Hello"}]}'

# Python (requests)
import requests
response = requests.post(
    "https://api.openai.com/v1/chat/completions",
    headers={
        "Content-Type": "application/json",
        "Authorization": "Bearer sk-..."
    },
    json={"model": "gpt-4o", "messages": [{"role": "user", "content": "Hello"}]}
)

5. How to Use an Online cURL Converter

Using our Online cURL to Code Converter:

1. Paste your cURL command — from API docs, browser DevTools, or Postman.
2. Select the target language — Python, JavaScript, Go, or PHP.
3. Copy the generated code — paste into your project and adjust as needed.

💡 All conversion happens in your browser. Your cURL command (and any secrets) never leaves your device.

6. Security Note

cURL commands often contain API keys or tokens. Use a client-side converter that runs entirely in the browser — never paste sensitive cURL commands into a server-based converter. Our tool processes everything locally.

7. Conclusion

A cURL-to-code converter is a productivity booster for API integration. When documentation gives you cURL, convert it to your language in seconds.

Try our free cURL Converter for instant, privacy-safe conversion — no upload, no account required.