Free tool curl converter

curl to Java converter

Paste a curl command, get runnable Java code using java.net.http.HttpClient. Headers, POST bodies, basic auth and proxy settings are all translated. Everything runs in your browser — nothing is uploaded.

curl command

Java code

// Output appears here

More converters

Convert curl to other languages

curl → Pythonrequests with a proxies dict curl → Node.jsnative fetch with an undici ProxyAgent curl → PHPcurl_setopt with CURLOPT_PROXY curl → Gohttp.Transport with ProxyURL

Notes

What the converter handles

The tool parses the curl flags that appear in real API calls and scraping commands: request method, headers, form and raw bodies, JSON payloads, basic authentication, redirects and proxy settings (JDK 11+). Anything it cannot translate is listed below the output rather than silently dropped, so the generated Java program does what the original command did.

Working through a proxy? The -x flag carries straight through — for example a ProxyOmega residential route with country targeting on the username. If the generated request returns an error, our error-code reference explains the usual causes and fixes for each status.

curl -x http://username:[email protected]:10000 \
  -H 'Accept: application/json' \
  https://api.ipify.org?format=json

FAQ

Converter questions

Does this tool upload my curl command anywhere?

No. The converter runs entirely in your browser as client-side JavaScript. Nothing you paste is sent to a server, stored, or logged — including credentials inside the command.

Which curl flags does the Java converter support?

The flags real-world API and scraping commands use: -X, -H, -d/--data variants, --json, -u, -x/--proxy, -U/--proxy-user, -A, -b, -F, -L, -G, -k and -e. Flags it cannot translate are listed under the output instead of being silently dropped.

How do I add a proxy to my curl command first?

Use -x http://user:pass@host:port. With ProxyOmega, the username carries targeting options like -country-us and the password is your dashboard API key. The converter carries the proxy into the generated code.

The generated code returns 407 — what now?

A 407 means the proxy rejected your credentials. Check the username and API key, or whitelist your IP in the dashboard and drop credentials entirely. See our full 407 error guide for step-by-step fixes.

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Test the generated request through clean residential IPs in 200+ countries — one account, every protocol.

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