Installing Dart and the SDK

The Dart SDK is a bundle of command-line tools that includes the dart executable (which runs, compiles, and formats code), the pub package manager for fetching dependencies from pub.dev, and standard libraries like dart:core, dart:async, and dart:io. You can get the SDK in two ways: install the standalone Dart SDK if you only need to write CLI tools or server code, or install the Flutter SDK, which bundles a compatible Dart SDK inside it automatically, meaning most mobile developers never install Dart separately at all. Because the two SDKs are versioned together, mixing an unrelated standalone Dart SDK with Flutter can cause version-mismatch errors, so Flutter developers should rely on the bundled copy.

On macOS and Linux, the simplest route is a package manager: Homebrew handles it on macOS with brew tap dart-lang/dart && brew install dart, while Linux distributions with apt support Google's hosted repository via sudo apt-get update && sudo apt-get install dart. On Windows, Chocolatey provides choco install dart-sdk, or you can download the SDK zip directly from dart.dev and add its bin folder to your PATH manually. Each method installs the same underlying SDK, so the choice is really about which package manager fits your existing workflow; developers who already use Homebrew or Chocolatey for other tools will find the install completes in under a minute with automatic PATH configuration.

Once installed, open a terminal and run dart --version, which should print something like Dart SDK version: 3.5.0 (stable). If the command isn't found, the SDK's bin directory isn't on your system PATH, which is the most common install issue, especially on Windows when the zip method is used instead of a package manager. You can also run dart doctor (available in recent SDK versions) or dart pub get inside a project to confirm the package manager can reach pub.dev. A working install lets you immediately run dart run bin/my_app.dart for any script without additional configuration.

Most Dart developers use Visual Studio Code with the official Dart extension (or the Flutter extension, which includes it), which adds syntax highlighting, code completion, inline error squiggles, and a built-in debugger that attaches to the Dart VM. IntelliJ IDEA and Android Studio offer an equivalent Dart plugin with the same feature set plus deeper Flutter widget inspection tools. Either editor talks to the Dart Analysis Server, a background process the SDK ships with that continuously type-checks your code as you type, which is why errors show up instantly rather than only when you run dart analyze or attempt to compile.