URLSession or Alamofire?

URLSession is the stdlib default and ships everywhere. Alamofire is nicer for multipart and retry, but it's an extra dependency — we emit URLSession so the snippet compiles as-is.

Is the multipart body correct?

Yes, but it's hand-assembled from Data because Foundation has no built-in multipart. For big files switch to URLSession.uploadTask(with:fromFile:) with a body written to a temp URL.

async/await, or completion handlers?

async/await. It compiles on iOS 15+ / macOS 12+ and matches what modern Swift codebases use. Drop-in completion-handler output is on the shortlist.

Is my curl sent anywhere?

No. Parsing and code generation happen entirely in your browser.

cURL converter · Swift

cURL to Swift

Paste a curl command and get a Swift snippet using URLSession's async data(for:) API. We hand-roll multipart bodies with Data, base64-encode -u into an Authorization header, and put the timeout on a URLSessionConfiguration.

InputcURL command

1 secret

MethodPOST·Headers2·Body46 B· Chars 187

OutputApple · URLSession(async/await)

import Foundation

let session = URLSession.shared
var request = URLRequest(url: URL(string: "https://api.example.com/v1/messages")!)
request.httpMethod = "POST"
request.setValue("Bearer sk_test_123", forHTTPHeaderField: "Authorization")
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = "{\"to\":\"+15551234567\",\"body\":\"Hello from curl\"}".data(using: .utf8)

let (data, response) = try await session.data(for: request)
print(String(data: data, encoding: .utf8) ?? "")
// Note: to disable redirects, implement URLSessionTaskDelegate.urlSession(_:task:willPerformHTTPRedirection:...) and return nil.

Inspect

Top guides for Swift

All guides →

POST in Swift

/how-to/curl-post-in-swift

GET in Swift

/how-to/curl-get-in-swift

JSON in Swift

/how-to/send-json-with-curl-in-swift

multipart form-data in Swift

/how-to/send-multipart-with-curl-in-swift

Bearer token in Swift

/how-to/curl-bearer-auth-in-swift

Basic auth in Swift

/how-to/curl-basic-auth-in-swift

Common questions

URLSession or Alamofire?: URLSession is the stdlib default and ships everywhere. Alamofire is nicer for multipart and retry, but it's an extra dependency — we emit URLSession so the snippet compiles as-is.
Is the multipart body correct?: Yes, but it's hand-assembled from Data because Foundation has no built-in multipart. For big files switch to URLSession.uploadTask(with:fromFile:) with a body written to a temp URL.
async/await, or completion handlers?: async/await. It compiles on iOS 15+ / macOS 12+ and matches what modern Swift codebases use. Drop-in completion-handler output is on the shortlist.
Is my curl sent anywhere?: No. Parsing and code generation happen entirely in your browser.

Also convert cURL to

All guides →

Same parser, same idiomatic output — swap the target language whenever your stack changes. Every hub carries its own reference guides for methods, payloads, and auth.

cURL to JavaScript

fetch

cURL to Node.js

native fetch

cURL to Python

requests

cURL to Go

net/http

cURL to PHP

ext-curl

cURL to Ruby

net/http