Does this tool send my curl command anywhere?

No. Parsing and code generation both happen in your browser with JavaScript. The command, headers, and any tokens inside it are never uploaded to a server.

Which curl flags are supported?

-X/--request, -H/--header, -d/--data/--data-raw/--data-binary, -F/--form, -u/--user, -b/--cookie, -A/--user-agent, -e/--referer, -G/--get, and -k/--insecure. Common no-op flags like --compressed, -s, -v, and -L are ignored since HttpClient handles equivalents by default.

Why does the generated code set Content-Type itself?

HttpClient does not infer a body's content type from its contents. When the body looks like JSON, the tool wraps it in StringContent with the application/json media type; for a plain -d body it uses application/x-www-form-urlencoded, matching what curl sends by default.

What happens with -F form fields?

Each -F field is added to a MultipartFormDataContent. A value starting with @ is treated as a file path and read with File.ReadAllBytes, matching how curl uploads files; other values are added as plain string fields.

What if my curl command spans multiple lines?

Backslash line continuations, the format most terminals and browser "Copy as cURL" buttons produce, are joined automatically before parsing.

Does -u produce real Basic auth in the C# code?

Yes. -u user:pass is base64-encoded and set on request.Headers.Authorization as a Basic AuthenticationHeaderValue, the same header curl sends for --user.

cURL to C#

Name: cURL to C#
Availability: InStock
Author: Nham Vu

Paste a curl command and get equivalent C# HttpClient code, with headers, JSON body, cookies, and auth already translated.

curl Command

C# (HttpClient)

Summary

Paste a curl command and get equivalent C# HttpClient code, with headers, JSON body, cookies, and auth already translated.

How it works

Paste a curl command, including one copied from a browser devtools network tab.
The parser tokenizes the command, honoring quotes and backslash line continuations.
Flags such as -X, -H, -d, -b, -u, -F, and -G are mapped to their HttpClient equivalents.
A JSON body is detected automatically and sent with StringContent using the application/json media type.
The generated C# program appears in the output box, ready to copy into a Program.cs file.

Use cases

Turn a "Copy as cURL" request from browser devtools into a C# test program.
Reproduce an API call from documentation or a support ticket in C#.
Convert a curl example from a README into a starting point for a .NET client.
Debug an API integration by replaying the exact request curl sent, in C#.
Translate a webhook test command into a repeatable C# console app.
Build a quick HttpClient call around a request captured from a mobile app proxy.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu