diff --git a/Library/Homebrew/cask/info.rb b/Library/Homebrew/cask/info.rb
index 328bac7ae5..acac2cbc29 100644
--- a/Library/Homebrew/cask/info.rb
+++ b/Library/Homebrew/cask/info.rb
@@ -42,16 +42,15 @@ module Cask
       return "Not installed" unless cask.installed?
 
       versioned_staged_path = cask.caskroom_path.join(cask.installed_version)
-      path_details = if versioned_staged_path.exist?
-        versioned_staged_path.abv
-      else
-        Formatter.error("does not exist")
-      end
+
+      return "Installed\n#{versioned_staged_path} (#{Formatter.error("does not exist")})\n" unless versioned_staged_path.exist?
+
+      path_details = versioned_staged_path.children.sum(&:disk_usage)
 
       tab = Tab.for_cask(cask)
 
       info = ["Installed"]
-      info << "#{versioned_staged_path} (#{path_details})"
+      info << "#{versioned_staged_path} (#{disk_usage_readable(path_details)})"
       info << "  #{tab}" if tab.tabfile&.exist?
       info.join("\n")
     end
diff --git a/Library/Homebrew/test/cask/info_spec.rb b/Library/Homebrew/test/cask/info_spec.rb
index b53c4ef3c0..d37557cc08 100644
--- a/Library/Homebrew/test/cask/info_spec.rb
+++ b/Library/Homebrew/test/cask/info_spec.rb
@@ -123,28 +123,33 @@ RSpec.describe Cask::Info, :cask do
   end
 
   it "prints install information for an installed Cask" do
-    cask = Cask::CaskLoader.load("local-transmission")
-    time = 1_720_189_863
-    tab = Cask::Tab.new(loaded_from_api: true, tabfile: TEST_FIXTURE_DIR/"cask_receipt.json", time:)
-    expect(cask).to receive(:installed?).and_return(true)
-    expect(cask).to receive(:installed_version).and_return("2.61")
-    expect(Cask::Tab).to receive(:for_cask).with(cask).and_return(tab)
+    mktmpdir do |caskroom|
+      FileUtils.mkdir caskroom/"2.61"
 
-    expect do
-      described_class.info(cask)
-    end.to output(<<~EOS).to_stdout
-      ==> local-transmission: 2.61
-      https://transmissionbt.com/
-      Installed
-      #{HOMEBREW_PREFIX}/Caskroom/local-transmission/2.61 (does not exist)
-        Installed using the formulae.brew.sh API on #{Time.at(time).strftime("%Y-%m-%d at %H:%M:%S")}
-      From: https://github.com/Homebrew/homebrew-cask/blob/HEAD/Casks/l/local-transmission.rb
-      ==> Name
-      Transmission
-      ==> Description
-      BitTorrent client
-      ==> Artifacts
-      Transmission.app (App)
-    EOS
+      cask = Cask::CaskLoader.load("local-transmission")
+      time = 1_720_189_863
+      tab = Cask::Tab.new(loaded_from_api: true, tabfile: TEST_FIXTURE_DIR/"cask_receipt.json", time:)
+      expect(cask).to receive(:installed?).and_return(true)
+      expect(cask).to receive(:caskroom_path).and_return(caskroom)
+      expect(cask).to receive(:installed_version).and_return("2.61")
+      expect(Cask::Tab).to receive(:for_cask).with(cask).and_return(tab)
+
+      expect do
+        described_class.info(cask)
+      end.to output(<<~EOS).to_stdout
+        ==> local-transmission: 2.61
+        https://transmissionbt.com/
+        Installed
+        #{caskroom}/2.61 (0B)
+          Installed using the formulae.brew.sh API on #{Time.at(time).strftime("%Y-%m-%d at %H:%M:%S")}
+        From: https://github.com/Homebrew/homebrew-cask/blob/HEAD/Casks/l/local-transmission.rb
+        ==> Name
+        Transmission
+        ==> Description
+        BitTorrent client
+        ==> Artifacts
+        Transmission.app (App)
+      EOS
+    end
   end
 end