diff --git a/Core/Config.cpp b/Core/Config.cpp
index 64d8b28519..11c108ad97 100644
--- a/Core/Config.cpp
+++ b/Core/Config.cpp
@@ -341,6 +341,8 @@ static const ConfigSetting generalSettings[] = {
 	ConfigSetting("RunBehindPauseMenu", &g_Config.bRunBehindPauseMenu, false, CfgFlag::DEFAULT),
 
 	ConfigSetting("ShowGPOLEDs", &g_Config.bShowGPOLEDs, false, CfgFlag::PER_GAME),
+
+	ConfigSetting("UIScaleFactor", &g_Config.iUIScaleFactor, false, CfgFlag::DEFAULT),
 };
 
 static bool DefaultSasThread() {
@@ -2151,3 +2153,7 @@ int MultiplierToVolume100(float multiplier) {
 	}
 	return (int)(powf(multiplier, 1.0f / 1.75f) * 100.f + 0.5f);
 }
+
+float UIScaleFactorToMultiplier(int factor) {
+	return powf(2.0f, (float)factor / 8.0f);
+}
diff --git a/Core/Config.h b/Core/Config.h
index 01fbe5143f..686df1df71 100644
--- a/Core/Config.h
+++ b/Core/Config.h
@@ -138,6 +138,7 @@ public:
 	int iMemStickSizeGB;
 	bool bLoadPlugins;
 	int iAskForExitConfirmationAfterSeconds;
+	int iUIScaleFactor;  // In 8ths of powers of two.
 
 	int iScreenRotation;  // The rotation angle of the PPSSPP UI. Only supported on Android and possibly other mobile platforms.
 	int iInternalScreenRotation;  // The internal screen rotation angle. Useful for vertical SHMUPs and similar.
diff --git a/Core/ConfigValues.h b/Core/ConfigValues.h
index 1dd1fc88b4..5033606d89 100644
--- a/Core/ConfigValues.h
+++ b/Core/ConfigValues.h
@@ -43,6 +43,8 @@ float Volume100ToMultiplier(int volume);
 // Used for migration from the old settings.
 int MultiplierToVolume100(float multiplier);
 
+float UIScaleFactorToMultiplier(int factor);
+
 struct ConfigTouchPos {
 	float x;
 	float y;
diff --git a/UI/GameSettingsScreen.cpp b/UI/GameSettingsScreen.cpp
index 9252c3c795..bbc1b0cc14 100644
--- a/UI/GameSettingsScreen.cpp
+++ b/UI/GameSettingsScreen.cpp
@@ -1128,6 +1128,8 @@ void GameSettingsScreen::CreateSystemSettings(UI::ViewGroup *systemSettings) {
 	});
 #endif
 
+	PopupSliderChoice *uiScale = systemSettings->Add(new PopupSliderChoice(&g_Config.iUIScaleFactor, -8, 8, 0, "UI scale factor (DPI adjustment)", screenManager()));
+
 	const Path bgPng = GetSysDirectory(DIRECTORY_SYSTEM) / "background.png";
 	const Path bgJpg = GetSysDirectory(DIRECTORY_SYSTEM) / "background.jpg";
 	if (File::Exists(bgPng) || File::Exists(bgJpg)) {
diff --git a/UI/NativeApp.cpp b/UI/NativeApp.cpp
index 8dca521881..4b6b32e5ee 100644
--- a/UI/NativeApp.cpp
+++ b/UI/NativeApp.cpp
@@ -1518,6 +1518,7 @@ static bool IsWindowSmall(int pixelWidth, int pixelHeight) {
 }
 
 bool Native_UpdateScreenScale(int pixel_width, int pixel_height, float customScale) {
+	_dbg_assert_(customScale > 0.1f);
 	float g_logical_dpi = System_GetPropertyFloat(SYSPROP_DISPLAY_LOGICAL_DPI);
 	float dpi = System_GetPropertyFloat(SYSPROP_DISPLAY_DPI);
 
@@ -1531,6 +1532,8 @@ bool Native_UpdateScreenScale(int pixel_width, int pixel_height, float customSca
 	bool smallWindow = IsWindowSmall(pixel_width, pixel_height);
 	if (smallWindow) {
 		customScale *= 0.5f;
+	} else {
+		customScale = UIScaleFactorToMultiplier(g_Config.iUIScaleFactor);
 	}
 
 	if (g_display.Recalculate(pixel_width, pixel_height, g_logical_dpi / dpi, customScale)) {
diff --git a/Windows/MainWindow.cpp b/Windows/MainWindow.cpp
index f0dc681c5c..82ebcb33f0 100644
--- a/Windows/MainWindow.cpp
+++ b/Windows/MainWindow.cpp
@@ -298,7 +298,7 @@ namespace MainWindow
 
 		DEBUG_LOG(Log::System, "Pixel width/height: %dx%d", PSP_CoreParameter().pixelWidth, PSP_CoreParameter().pixelHeight);
 
-		if (Native_UpdateScreenScale(width, height, 1.0f)) {
+		if (Native_UpdateScreenScale(width, height, UIScaleFactorToMultiplier(g_Config.iUIScaleFactor))) {
 			System_PostUIMessage(UIMessage::GPU_DISPLAY_RESIZED);
 			System_PostUIMessage(UIMessage::GPU_RENDER_RESIZED);
 		}