ZenCompiler is a fast Dart online compiler and modern language playground. Run Dart programs online with crisp syntax highlighting and explore the Dart programming language without installing the Flutter SDK locally. Test modern Dart 3 features including records, pattern matching, sound null safety, Futures, and asynchronous streams in an interactive cloud environment.
Built for high execution velocity, seamless STDIN interactivity, and zero configuration.
Run Dart programs online with official Dart 3 runtime and sound null safety enabled
Modern editor with syntax highlighting, auto-formatting, and error squiggles
Complete Dart programming language support for async/await, Streams, Futures, and generics
Interactive terminal input handling via dart:io stdin.readLineSync()
Instant sub-50ms execution times inside secure Linux container sandboxes
Runs directly with dart run on secure Linux sandboxes with instant stdout/stderr output streaming.
Testing Flutter/Dart core logic, learning Dart programming language fundamentals, running Dart programs, and algorithm verification.
Everything you need to know about compiling and executing Dart on ZenCompiler.
Switch to another language sandbox with instantaneous execution.