Online Flutter Compiler

Write and preview Flutter code directly in your browser with this free online compiler. Flutter is Google's UI toolkit for building natively compiled applications for mobile, web, and desktop from a single Dart codebase. This compiler lets you design and preview Flutter widgets instantly without installing the Flutter SDK.

What is Flutter?

Flutter is an open-source UI framework created by Google in 2017 for building cross-platform applications. Unlike other frameworks that use web technologies, Flutter renders its own widgets using the Skia graphics engine, delivering native performance on every platform. Flutter uses Dart as its programming language and features a rich set of Material Design and Cupertino widgets. Its hot reload feature lets developers see changes instantly, making development fast and iterative.

Key Features

• Cross-Platform: Single codebase for iOS, Android, web, Windows, macOS, and Linux.
• Hot Reload: See changes instantly without restarting the app.
• Custom Widgets: Build any UI with composable, customizable widgets.
• Native Performance: Compiled to native ARM code for fast execution.
• Rich Ecosystem: Thousands of packages for navigation, state management, and more.

Basic Flutter Syntax

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('LabsICT Flutter Demo'),
          backgroundColor: Colors.cyan,
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text(
                'Welcome to Flutter!',
                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
              ),
              SizedBox(height: 16),
              ElevatedButton(
                onPressed: () {
                  debugPrint('Button pressed!');
                },
                child: Text('Click Me'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

What Can You Build with Flutter?

Flutter is used to build production-quality mobile apps for iOS and Android from a single codebase. Companies like Google, BMW, Toyota, and Alibaba use Flutter for their mobile applications. Flutter is also used to build web applications, desktop apps for Windows, macOS, and Linux, and embedded applications. The Flutter ecosystem includes packages for state management (Provider, Riverpod), navigation, database access, and platform integration.

Try It Yourself

Type your Flutter/Dart code in the editor and click Run to preview the widget output. The compiler supports Flutter's widget tree, Material Design components, and Dart syntax. Use Copy to save, Reset to restore the example, and Share to generate a link.

Related Resources

Continue with our Flutter learning track, try more online compilers, or browse tutorials for step-by-step guides.