cURL Generator — Free Online cURL Command Builder
Free online cURL generator and converter. Build cURL commands with query params, headers, JSON or form body, basic/bearer auth and flags — or import a cURL c...
To generate a cURL command, enter the request URL, pick the HTTP method and add headers, parameters, auth or a body; the ready-to-run command appears below to copy.
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cURL Generator — Free Online cURL Command Builder. Free online cURL generator and converter. Build cURL commands with query params, headers, JSON or form body, basic/bearer auth and flags — or import a cURL command and convert it to Python or JavaScript fetch.
Build any HTTP request visually and get a ready-to-run command with our free online cURL generator.
Pick a method (GET, POST, PUT, PATCH, DELETE, HEAD or OPTIONS), enter the URL, add query parameters and headers, and the cURL command builder writes correctly quoted output as you type.
Send a cURL POST JSON body with the Content-Type header added automatically (plus a one-click JSON formatter and validator), switch to URL-encoded form fields with --data-urlencode, or paste raw text.
Authentication is built in: choose cURL basic auth (-u user:password) or a cURL bearer token header without typing the syntax by hand.
The generator also works in reverse as a cURL converter: paste a command copied from browser DevTools, API docs or a colleague's terminal and it is parsed back into the form — method, URL, headers, body, auth and flags — so you can edit it, and unsupported options are listed rather than silently dropped.
From the same request you get a cURL to Python snippet (requests library) and a JavaScript fetch() snippet.
Output can be formatted for Bash, macOS and Linux (multi-line with backslashes), as a single line, for Windows CMD (caret line breaks, double quotes) or for PowerShell (curl.exe with backticks), with quotes escaped correctly for each shell.
Common flags are checkboxes: follow redirects (-L), skip TLS verification (-k), verbose (-v), include response headers (-i), silent (-s), --compressed and a --max-time timeout.
Load the sample request to see a complete example, then share a link that restores the whole request. Everything runs in your browser — URLs, tokens and payloads are never sent to a server.
Related tools: HTTP Header Parser, JSON Formatter, URL Encoder, Basic Auth Generator and HTTP Status Codes.
Frequently asked questions
How do I build a cURL command with this tool?
Enter the Request URL and choose a method such as GET or POST. Add Query parameters and Headers with their Add buttons, pick Basic auth or Bearer token under Authentication if needed, and enter a JSON, form or raw body for POST, PUT, PATCH or DELETE. The command updates live; click Copy.
How do I send JSON in a cURL POST request?
Select POST, keep the body type on JSON and paste your JSON into Request Body; Format JSON pretty-prints it. The command gets -d with your body plus a Content-Type: application/json header, unless you already added your own Content-Type.
Can I convert an existing cURL command to Python or JavaScript?
Yes. Paste the command into Import an existing cURL command and click Import. The form is filled in, any unsupported options are listed and skipped, and the Convert to code section shows equivalent Python (requests) and JavaScript (fetch) code to copy.
Which output style should I use on Windows?
Choose Windows CMD for Command Prompt (double quotes and caret line breaks) or PowerShell, which calls curl.exe with backtick line breaks so the PowerShell curl alias is not used. Bash / macOS / Linux uses single quotes and backslashes, and Single line puts everything on one line.
What do the options such as Follow redirects add?
Follow redirects adds -L, Skip TLS certificate check adds -k, Verbose output adds -v, Include response headers adds -i, Silent mode adds -s and Request compressed response adds --compressed. A Timeout (seconds) value adds --max-time.
Does the tool send my request or keep my credentials?
No. It only builds the command text in your browser and never calls your API. Copy link shares the URL, method, headers and body, but leaves out passwords, bearer tokens and credential headers such as Authorization, Cookie or API keys.
How to use this online tool
cURL Generator — Free Online cURL Command Builder is designed for fast browser workflows when you need to format, validate, convert, decode, encode, generate, or inspect data without opening a heavy desktop app. Start with the input field or visible options, review the result, then copy or download the output for the next step.
Private processing in your browser
cURL Generator — Free Online cURL Command Builder keeps the normal processing step local in your browser. That is useful for code snippets, tokens, documents, configuration values, text samples, and other material that should not be sent to a remote service unless you explicitly choose to share it.
When this tool is useful
Use cURL Generator — Free Online cURL Command Builder for repeatable developer tasks, technical documentation, QA checks, quick conversions, debugging, content cleanup, and internal team workflows. The page focuses on clear inputs, immediate feedback, and output that is easy to reuse in code, reports, tickets, emails, or notes.
Practical tips
Before copying the final result, check important details such as spacing, casing, filenames, encoding, token structure, line breaks, or output format. Small checks prevent mistakes when the result is reused in source code, API requests, documentation, spreadsheets, or shared files.