diff --git a/Xcodes/Backend/AppState+Update.swift b/Xcodes/Backend/AppState+Update.swift
index 660d2f0..dd5b7d7 100644
--- a/Xcodes/Backend/AppState+Update.swift
+++ b/Xcodes/Backend/AppState+Update.swift
@@ -133,7 +133,7 @@ extension AppState {
                         else { return nil }
 
                         let url = urlPrefix.appendingPathComponent(xcodeFile.remotePath)
-                        return AvailableXcode(version: version, url: url, filename: String(xcodeFile.remotePath.suffix(fromLast: "/")), releaseDate: download.dateModified)
+                        return AvailableXcode(version: version, url: url, filename: String(xcodeFile.remotePath.suffix(fromLast: "/")), releaseDate: download.dateModified, fileSize: xcodeFile.fileSize)
                     }
                 return xcodes
             }
diff --git a/Xcodes/Backend/AppState.swift b/Xcodes/Backend/AppState.swift
index 59f3089..ed465f8 100644
--- a/Xcodes/Backend/AppState.swift
+++ b/Xcodes/Backend/AppState.swift
@@ -459,7 +459,8 @@ class AppState: ObservableObject {
                     requiredMacOSVersion: availableXcode.requiredMacOSVersion,
                     releaseNotesURL: availableXcode.releaseNotesURL,
                     sdks: availableXcode.sdks,
-                    compilers: availableXcode.compilers
+                    compilers: availableXcode.compilers,
+                    downloadFileSize: availableXcode.fileSize
                 )
             }
         
diff --git a/Xcodes/Backend/AvailableXcode.swift b/Xcodes/Backend/AvailableXcode.swift
index c1810ba..cf3f0e4 100644
--- a/Xcodes/Backend/AvailableXcode.swift
+++ b/Xcodes/Backend/AvailableXcode.swift
@@ -13,6 +13,7 @@ public struct AvailableXcode: Codable {
     public let releaseNotesURL: URL?
     public let sdks: SDKs?
     public let compilers: Compilers?
+    public let fileSize: Int64?
 
     public init(
         version: Version,
@@ -22,7 +23,8 @@ public struct AvailableXcode: Codable {
         requiredMacOSVersion: String? = nil,
         releaseNotesURL: URL? = nil,
         sdks: SDKs? = nil,
-        compilers: Compilers? = nil
+        compilers: Compilers? = nil,
+        fileSize: Int64? = nil
     ) {
         self.version =  version
         self.url = url
@@ -32,5 +34,6 @@ public struct AvailableXcode: Codable {
         self.releaseNotesURL = releaseNotesURL
         self.sdks = sdks
         self.compilers = compilers
+        self.fileSize = fileSize
     }
 }
diff --git a/Xcodes/Backend/Downloads.swift b/Xcodes/Backend/Downloads.swift
index 45e2bb7..55096e4 100644
--- a/Xcodes/Backend/Downloads.swift
+++ b/Xcodes/Backend/Downloads.swift
@@ -6,6 +6,9 @@ struct Downloads: Codable {
     let downloads: [Download]
 }
 
+// Set to Int64 as ByteCountFormatter uses it.
+public typealias ByteCount = Int64
+
 public struct Download: Codable {
     public let name: String
     public let files: [File]
@@ -13,5 +16,6 @@ public struct Download: Codable {
 
     public struct File: Codable {
         public let remotePath: String
+        public let fileSize: ByteCount
     }
 }
diff --git a/Xcodes/Backend/Xcode.swift b/Xcodes/Backend/Xcode.swift
index 481eb78..a5da1bc 100644
--- a/Xcodes/Backend/Xcode.swift
+++ b/Xcodes/Backend/Xcode.swift
@@ -13,6 +13,7 @@ struct Xcode: Identifiable, CustomStringConvertible {
     let releaseNotesURL: URL?
     let sdks: SDKs?
     let compilers: Compilers?
+    let downloadFileSize: Int64?
     
     init(
         version: Version,
@@ -22,7 +23,8 @@ struct Xcode: Identifiable, CustomStringConvertible {
         requiredMacOSVersion: String? = nil,
         releaseNotesURL: URL? = nil,
         sdks: SDKs? = nil,
-        compilers: Compilers? = nil
+        compilers: Compilers? = nil,
+        downloadFileSize: Int64? = nil
     ) {
         self.version = version
         self.installState = installState
@@ -32,6 +34,7 @@ struct Xcode: Identifiable, CustomStringConvertible {
         self.releaseNotesURL = releaseNotesURL
         self.sdks = sdks
         self.compilers = compilers
+        self.downloadFileSize = downloadFileSize
     }
     
     var id: Version { version }
@@ -39,4 +42,12 @@ struct Xcode: Identifiable, CustomStringConvertible {
     var description: String {
         version.appleDescription
     }
+    
+    var downloadFileSizeString: String? {
+        if let downloadFileSize = downloadFileSize {
+            return ByteCountFormatter.string(fromByteCount: downloadFileSize, countStyle: .file)
+        } else {
+            return nil
+        }
+    }
 }
diff --git a/Xcodes/Frontend/XcodeList/InfoPane.swift b/Xcodes/Frontend/XcodeList/InfoPane.swift
index 6e0b6b7..382138b 100644
--- a/Xcodes/Frontend/XcodeList/InfoPane.swift
+++ b/Xcodes/Frontend/XcodeList/InfoPane.swift
@@ -56,7 +56,8 @@ struct InfoPane: View {
                     compatibility(for: xcode)
                     sdks(for: xcode)
                     compilers(for: xcode)
-                  
+                    downloadFileSize(for: xcode)
+                    
                     Spacer()
                 }
             } else {
@@ -162,6 +163,24 @@ struct InfoPane: View {
         }
     }
     
+    @ViewBuilder
+    private func downloadFileSize(for xcode: Xcode) -> some View {
+        // if we've downloaded it no need to show the download size
+        if let downloadFileSize = xcode.downloadFileSizeString, case .notInstalled = xcode.installState {
+            VStack(alignment: .leading) {
+                Text("Download Size")
+                    .font(.headline)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                Text("\(downloadFileSize)")
+                    .font(.subheadline)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+            }
+        } else {
+            EmptyView()
+        }
+    }
+    
+    
     @ViewBuilder
     private var empty: some View {
         VStack {
@@ -199,7 +218,9 @@ struct InfoPane_Previews: PreviewProvider {
                                 llvm: .init(number: "2.3"),
                                 clang: .init(number: "7.3"),
                                 swift: .init(number: "5.3.2")
-                            ))
+                            ),
+                            downloadFileSize: 242342424
+                            )
                     ]
                 })
                 .previewDisplayName("Populated, Installed, Selected")
@@ -224,7 +245,8 @@ struct InfoPane_Previews: PreviewProvider {
                                 llvm: .init(number: "2.3"),
                                 clang: .init(number: "7.3"),
                                 swift: .init(number: "5.3.2")
-                            ))
+                            ),
+                            downloadFileSize: 242342424)
                     ]
                 })
                 .previewDisplayName("Populated, Installed, Unselected")
@@ -249,7 +271,8 @@ struct InfoPane_Previews: PreviewProvider {
                                 llvm: .init(number: "2.3"),
                                 clang: .init(number: "7.3"),
                                 swift: .init(number: "5.3.2")
-                            ))
+                            ),
+                            downloadFileSize: 242342424)
                     ]
                 })
                 .previewDisplayName("Populated, Uninstalled")
diff --git a/XcodesTests/AppStateTests.swift b/XcodesTests/AppStateTests.swift
index c9fffb2..0c4c165 100644
--- a/XcodesTests/AppStateTests.swift
+++ b/XcodesTests/AppStateTests.swift
@@ -89,7 +89,7 @@ class AppStateTests: XCTestCase {
             }
             // It's an available release version
             else if urlRequest.url! == URLRequest.downloads.url! {
-                let downloads = Downloads(downloads: [Download(name: "Xcode 0.0.0", files: [Download.File(remotePath: "https://apple.com/xcode.xip")], dateModified: Date())])
+                let downloads = Downloads(downloads: [Download(name: "Xcode 0.0.0", files: [Download.File(remotePath: "https://apple.com/xcode.xip", fileSize: 9484444)], dateModified: Date())])
                 let encoder = JSONEncoder()
                 encoder.dateEncodingStrategy = .formatted(.downloadsDateModified)
                 let downloadsData = try! encoder.encode(downloads)
@@ -199,7 +199,7 @@ class AppStateTests: XCTestCase {
             }
             // It's an available release version
             else if urlRequest.url! == URLRequest.downloads.url! {
-                let downloads = Downloads(downloads: [Download(name: "Xcode 0.0.0", files: [Download.File(remotePath: "https://apple.com/xcode.xip")], dateModified: Date())])
+                let downloads = Downloads(downloads: [Download(name: "Xcode 0.0.0", files: [Download.File(remotePath: "https://apple.com/xcode.xip", fileSize: 9494944)], dateModified: Date())])
                 let encoder = JSONEncoder()
                 encoder.dateEncodingStrategy = .formatted(.downloadsDateModified)
                 let downloadsData = try! encoder.encode(downloads)