diff --git a/UnleashedRecomp/gpu/video.cpp b/UnleashedRecomp/gpu/video.cpp
index a9edd0b..35817f5 100644
--- a/UnleashedRecomp/gpu/video.cpp
+++ b/UnleashedRecomp/gpu/video.cpp
@@ -3052,6 +3052,24 @@ void Video::ComputeViewportDimensions()
 
         break;
     }
+    
+    case EAspectRatio::Custom:
+    {
+        float customAspectRatio = Config::CustomAspectRatio;
+
+        if (aspectRatio > customAspectRatio)
+        {
+            s_viewportWidth = height * customAspectRatio;
+            s_viewportHeight = height;
+        }
+        else
+        {
+            s_viewportWidth = width;
+            s_viewportHeight = width * (1. / customAspectRatio);
+        }
+
+        break;
+    }
 
     default:
         s_viewportWidth = width;
diff --git a/UnleashedRecomp/locale/config_locale.cpp b/UnleashedRecomp/locale/config_locale.cpp
index 1242e4e..ea25adc 100644
--- a/UnleashedRecomp/locale/config_locale.cpp
+++ b/UnleashedRecomp/locale/config_locale.cpp
@@ -546,7 +546,8 @@ CONFIG_DEFINE_ENUM_LOCALE(EAspectRatio)
             { EAspectRatio::Auto, { "AUTO", "Auto: the aspect ratio will dynamically adjust to the window size." } },
             { EAspectRatio::Wide, { "16:9", "16:9: locks the game to a widescreen aspect ratio." } },
             { EAspectRatio::Narrow, { "4:3", "4:3: locks the game to a narrow aspect ratio." } },
-            { EAspectRatio::OriginalNarrow, { "ORIGINAL 4:3", "Original 4:3: locks the game to a narrow aspect ratio and retains parity with the game's original implementation." } }
+            { EAspectRatio::OriginalNarrow, { "ORIGINAL 4:3", "Original 4:3: locks the game to a narrow aspect ratio and retains parity with the game's original implementation." } },
+            { EAspectRatio::Custom, { "Custom", "Custom:\nThe aspect ratio is set by using the CustomAspectRatio value in the config.toml file." } }
         }
     },
     {
@@ -564,7 +565,8 @@ CONFIG_DEFINE_ENUM_LOCALE(EAspectRatio)
             { EAspectRatio::Auto, { "AUTO", "Auto: Das Seitenverhältnis passt sich automatisch der Fenstergröße an." } },
             { EAspectRatio::Wide, { "16:9", "16:9: Stellt das Spiel in einem Breitbildschirm-Format dar." } },
             { EAspectRatio::Narrow, { "4:3", "4:3: Stellt das Spiel in einem Mittel-Format dar." } },
-            { EAspectRatio::OriginalNarrow, { "ORIGINAL 4:3", "Original 4:3: Stellt das Spiel in einem Mittel-Format dar, was der ursprünglichen Implementation originalgetreut bleibt." } }
+            { EAspectRatio::OriginalNarrow, { "ORIGINAL 4:3", "Original 4:3: Stellt das Spiel in einem Mittel-Format dar, was der ursprünglichen Implementation originalgetreut bleibt." } },
+            { EAspectRatio::Custom, { "Benutzerdefiniert", "Benutzerdefiniert:\nDas Seitenverhältnis entspricht dem Wert CustomAspectRatio in der Datei config.toml." } }
         }
     },
     {
diff --git a/UnleashedRecomp/user/config.cpp b/UnleashedRecomp/user/config.cpp
index bd622b7..104e173 100644
--- a/UnleashedRecomp/user/config.cpp
+++ b/UnleashedRecomp/user/config.cpp
@@ -322,6 +322,7 @@ CONFIG_DEFINE_ENUM_TEMPLATE(EAspectRatio)
     { "16:9", EAspectRatio::Wide },
     { "4:3",  EAspectRatio::Narrow },
     { "Original 4:3",  EAspectRatio::OriginalNarrow },
+    { "Custom",  EAspectRatio::Custom },
 };
 
 CONFIG_DEFINE_ENUM_TEMPLATE(ETripleBuffering)
diff --git a/UnleashedRecomp/user/config.h b/UnleashedRecomp/user/config.h
index 9e87d12..25cb1c7 100644
--- a/UnleashedRecomp/user/config.h
+++ b/UnleashedRecomp/user/config.h
@@ -85,7 +85,8 @@ enum class EAspectRatio : uint32_t
     Auto,
     Wide,
     Narrow,
-    OriginalNarrow
+    OriginalNarrow,
+    Custom
 };
 
 enum class ETripleBuffering : uint32_t
diff --git a/UnleashedRecomp/user/config_def.h b/UnleashedRecomp/user/config_def.h
index 80eb29c..948080f 100644
--- a/UnleashedRecomp/user/config_def.h
+++ b/UnleashedRecomp/user/config_def.h
@@ -56,6 +56,7 @@ CONFIG_DEFINE("Video", int32_t, WindowHeight, 720);
 CONFIG_DEFINE_ENUM("Video", EWindowState, WindowState, EWindowState::Normal);
 CONFIG_DEFINE_LOCALISED("Video", int32_t, Monitor, 0);
 CONFIG_DEFINE_ENUM_LOCALISED("Video", EAspectRatio, AspectRatio, EAspectRatio::Auto);
+CONFIG_DEFINE("Video", float, CustomAspectRatio, (16.0f / 9.0f));
 CONFIG_DEFINE_LOCALISED("Video", float, ResolutionScale, 1.0f);
 CONFIG_DEFINE_LOCALISED("Video", bool, Fullscreen, true);
 CONFIG_DEFINE_LOCALISED("Video", bool, VSync, true);