Curl Command Builder

Turn an API request into a curl command.

Runs locallyNo signupMobile readyCopyableFree

⌨Curl Command Builder

All processing happens locally

Method

URL

Headers (one Key: Value per line)

Request body

curl command

Curl Command Builder is a tool that writes curl commands for you, processing runs locally in your browser, so your input never reaches a server.

Results update as you change values; copy or download when ready.

Paste or type your content into the input field at the top, or press the sample button to load demo data.
Adjust the options below the input, such as output format, separators, letter case or precision.
Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
When the result looks right, use the copy button in the corner, or download it as a local file.

Clean up stray spaces and line breaks before pasting for more accurate results.

Which curl syntax is generated?+

Portable flags: -X for the method, -H for headers and -d for the body. All three exist in curl 7 and later.

Will non-ASCII text break?+

UTF-8 text is preserved as-is; your terminal must use UTF-8. URL-encode first if the server demands it.

Any PowerShell version?+

The output is standard curl syntax. In PowerShell curl aliases Invoke-WebRequest, so install native curl or use Invoke-RestMethod instead.

Is Curl Command Builder free to use?+

Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.

Is the text I enter uploaded anywhere?+

No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.

Does Curl Command Builder work on a phone or tablet?+

Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.

Can I copy the result into my own document?+

Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.