What does flutter clean do?

It removes the project's build/ and .dart_tool/ folders - 1-5 GB per app once you build for both iOS and Android. Everything regenerates on the next flutter run.

How do I clear the Dart pub cache?

dart pub cache clean wipes ~/.pub-cache; packages re-download on the next pub get.

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Flutter disk cleanup

CacheCleaner guides · Updated July 18, 2026

Flutter junk lives in three places: per-project build/ and .dart_tool/ (1-5 GB per app once you build for iOS and Android), the global pub cache, and the Flutter SDK's own artifact cache.

Per project

flutter clean          # removes build/ and .dart_tool/ for this project

Everything regenerates on the next flutter run. For repos you're not touching anymore, deleting the folders directly is the same thing:

find ~ -name .dart_tool -type d -prune -exec du -sh {} + 2>/dev/null | sort -rh | head

The global pub cache

du -sh ~/.pub-cache
dart pub cache clean   # wipes it; packages re-download on next pub get

The SDK's artifact cache

flutter/bin/cache      # engine binaries per platform you built for

Managed by the SDK – flutter precache --force re-fetches what's needed. Old SDK checkouts (if you keep several versions) are the bigger win: each is 2-4 GB.

Don't forget the platform sides

A Flutter app is also an iOS and an Android project: DerivedData, CocoaPods' Pods/ and Gradle caches all apply on top.

CacheCleaner finds Flutter build/ and .dart_tool/ folders across your disk together with the pub cache, Pods, and the Xcode/Gradle layers underneath – one scan for the whole cross-platform stack.

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