# Is it safe to delete the .dart_tool folder in Flutter?

- URL: https://moreroom.app/folders/project-dart-tool
- Item: Flutter project caches (.dart_tool)
- Location: `…/.dart_tool`
- Verdict: Safe to remove — Rebuilt or re-downloaded automatically when needed.
- Comes back on its own: yes
- Typical size: 10–500 MB per project
- Source: MoreRoom rules catalogue (2026-10-17), by Yando Pte. Ltd.

## What is it?

Dart and Flutter create a `.dart_tool` folder next to `pubspec.yaml` with package configuration, build caches and generated files. Only folders in projects untouched for 30 days are considered. Typically tens of MB to a few hundred MB.

## What happens if you delete it?

It is recreated by `flutter pub get` or `dart pub get`, which `flutter run` and `flutter build` run automatically. Code generated by `build_runner` is regenerated on its next run.

## How to remove it properly

Run `flutter clean` in the project, which deletes `.dart_tool` and `build` permanently, or move `.dart_tool` to the Trash in Finder.