cURL to F# Converter

Convert curl commands to F# code using HttpClient. Paste a command and the F# snippet appears instantly — everything runs in your browser.

Instant ConversionCode updates as you type
Multiple Languages40 languages, 61 libraries
100% Client SideYour data stays private

Enter cURL Command

Paste your cURL command below or try an example

cURL command

curl https://example.com

Select Programming Language

Choose the language to convert your cURL command

F# Code

Generated F# code using HttpClient

Library

HttpClient

open System
open System.Net.Http

let client = new HttpClient()

let request = new HttpRequestMessage(HttpMethod.Get, "https://example.com")

let response = client.Send(request)
printfn "%d" (int response.StatusCode)
printfn "%s" (response.Content.ReadAsStringAsync().Result)

open System
open System.Net.Http

let client = new HttpClient()

let request = new HttpRequestMessage(HttpMethod.Get, "https://example.com")

let response = client.Send(request)
printfn "%d" (int response.StatusCode)
printfn "%s" (response.Content.ReadAsStringAsync().Result)

GET example.com 0 headers no body10 lines · Program.fsx

Quick Examples

Pick an example, then press Use This Example

GET Request

curl -H 'Accept: application/json' https://api.example.com/users

Copy any request as cURL

1Open your browser's DevTools and go to the Network tab.
2Right-click (or Ctrl-click) the request you want.
3Choose Copy → Copy as cURL (in Chrome pick the bash version).
4Paste it into the Enter cURL Command box above.

This works in Chrome, Edge, Firefox and Safari.

Careful: copied commands often contain cookies or tokens. Remove them before sharing the code — sharing a session cookie is like sharing your password. Conversion happens entirely in your browser.

40 languages · 61 libraries · nothing you paste leaves your browser.

How to use this tool

Copy a curl command — from API documentation, or from your browser's DevTools (Network tab → right-click a request → Copy as cURL (bash)).
Paste it into Enter cURL command. The F# HttpClient code appears instantly.
Set up: Install the .NET SDK 6 or later — HttpClient is part of it, so there are no packages to add.
Run it: Save the code as Program.fsx and run dotnet fsi Program.fsx. Replace placeholders such as YOUR_TOKEN first, and check any notes under the editors for curl options that have no HttpClient equivalent.

Example

GET with headers → F# HttpClient

curl command

curl 'https://api.example.com/v1/users?page=2' \
  -H 'Accept: application/json' \
  -H 'Authorization: Bearer YOUR_TOKEN'

F# HttpClient

open System
open System.Net.Http

let client = new HttpClient()

let request = new HttpRequestMessage(HttpMethod.Get, "https://api.example.com/v1/users?page=2")
request.Headers.TryAddWithoutValidation("Accept", "application/json") |> ignore
request.Headers.TryAddWithoutValidation("Authorization", "Bearer YOUR_TOKEN") |> ignore

let response = client.Send(request)
printfn "%d" (int response.StatusCode)
printfn "%s" (response.Content.ReadAsStringAsync().Result)

Common use cases

F# scripts and data notebooks
F# services calling REST APIs

Converting curl to F# HttpClient

HttpClient is .NET's built-in HTTP client. The F# code builds an HttpRequestMessage, sends it with client.Send and prints the status and body.

The converter reads the curl command the way curl does — the method (-X), headers (-H), request bodies (-d, --data-raw, --json, -F), query strings, basic auth (-u) and cookies — and writes the equivalent HttpClient code. Options that have no HttpClient equivalent are listed under the editors rather than silently dropped.

Limitations

The code is a starting point: add timeouts, retries and error handling for production use.
Secrets in the curl command are copied into the code — move them to environment variables before committing.

Frequently asked questions

Why |> ignore after TryAddWithoutValidation?

The method returns true or false. F# warns when a result is silently discarded, so |> ignore says it isn't needed.

Should I use async code?

In an application, yes: use client.SendAsync inside a task { } block. The script uses the synchronous Send to stay short.

Should I create a new HttpClient for every request?

No. Create one and reuse it, so connections are pooled.

Is my curl command sent to a server?

No. The conversion runs entirely in your browser, so tokens and passwords in the command never leave your device. Still, replace real secrets before sharing the generated code.