diff --git a/src/Controls/src/Core/Handlers/Items/Tizen/ItemTemplateAdaptor.cs b/src/Controls/src/Core/Handlers/Items/Tizen/ItemTemplateAdaptor.cs
index d0a68324cafd..5b116649ff4e 100644
--- a/src/Controls/src/Core/Handlers/Items/Tizen/ItemTemplateAdaptor.cs
+++ b/src/Controls/src/Core/Handlers/Items/Tizen/ItemTemplateAdaptor.cs
@@ -421,12 +421,12 @@ public DefaultItemTemplate() : base(CreateView) { }
 
 		class ToTextConverter : IValueConverter
 		{
-			public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+			public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
 			{
 				return value?.ToString() ?? string.Empty;
 			}
 
-			public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) => throw new NotImplementedException();
+			public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) => throw new NotImplementedException();
 		}
 
 		static View CreateView()
diff --git a/src/Controls/src/Core/IValueConverter.cs b/src/Controls/src/Core/IValueConverter.cs
index 0491ecd9375f..fd3d91360c00 100644
--- a/src/Controls/src/Core/IValueConverter.cs
+++ b/src/Controls/src/Core/IValueConverter.cs
@@ -1,4 +1,4 @@
-#nullable disable
+#nullable enable
 using System;
 using System.Globalization;
 
@@ -6,7 +6,7 @@ namespace Microsoft.Maui.Controls
 {
 	public interface IValueConverter
 	{
-		object Convert(object value, Type targetType, object parameter, CultureInfo culture);
-		object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture);
+		object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture);
+		object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture);
 	}
 }
\ No newline at end of file
diff --git a/src/Controls/src/Core/Platform/Tizen/IconConverter.cs b/src/Controls/src/Core/Platform/Tizen/IconConverter.cs
index 214cd517468c..4610095ccd09 100644
--- a/src/Controls/src/Core/Platform/Tizen/IconConverter.cs
+++ b/src/Controls/src/Core/Platform/Tizen/IconConverter.cs
@@ -6,13 +6,13 @@ namespace Microsoft.Maui.Controls.Platform
 {
 	public class IconConverter : IValueConverter
 	{
-		object? IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		object? IValueConverter.Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
 		{
 			PathGeometryConverter converter = new PathGeometryConverter();
-			return converter.ConvertFromInvariantString((string)value);
+			return converter.ConvertFromInvariantString((value as string)!);
 		}
 
-		object? IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+		object? IValueConverter.ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
 		{
 			PathGeometryConverter converter = new PathGeometryConverter();
 			return converter.ConvertToString(value);
diff --git a/src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt
index 218837ca2448..f2dced895bf7 100644
--- a/src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt
@@ -46,4 +46,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
\ No newline at end of file
diff --git a/src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt
index bfe73ebeb904..8f977b00c163 100644
--- a/src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt
@@ -43,4 +43,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
\ No newline at end of file
diff --git a/src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt
index bfe73ebeb904..369b4400a551 100644
--- a/src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt
@@ -43,4 +43,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
diff --git a/src/Controls/src/Core/PublicAPI/net-tizen/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net-tizen/PublicAPI.Unshipped.txt
index 7fc7bdb374db..d470beb90cd0 100644
--- a/src/Controls/src/Core/PublicAPI/net-tizen/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net-tizen/PublicAPI.Unshipped.txt
@@ -41,4 +41,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
\ No newline at end of file
diff --git a/src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt
index 1e2360ee9067..026732e2b8c8 100644
--- a/src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt
@@ -40,4 +40,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
\ No newline at end of file
diff --git a/src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt
index b615d03eee31..09f33a198b3c 100644
--- a/src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt
@@ -44,4 +44,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
diff --git a/src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt b/src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt
index 286aa4b17784..d3365b8e2287 100644
--- a/src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt
+++ b/src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt
@@ -38,4 +38,6 @@ override Microsoft.Maui.Controls.SearchBar.IsEnabledCore.get -> bool
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.HasRenderLoop.set -> void
 *REMOVED*Microsoft.Maui.Controls.OpenGLView.OpenGLView() -> void
 *REMOVED*Microsoft.Maui.Controls.Application.SavePropertiesAsync() -> System.Threading.Tasks.Task!
-*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
\ No newline at end of file
+*REMOVED*Microsoft.Maui.Controls.Application.Properties.get -> System.Collections.Generic.IDictionary<string!, object!>!
+Microsoft.Maui.Controls.IValueConverter.Convert(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
+Microsoft.Maui.Controls.IValueConverter.ConvertBack(object? value, System.Type! targetType, object? parameter, System.Globalization.CultureInfo! culture) -> object?
\ No newline at end of file
diff --git a/src/TestUtils/src/DeviceTests.Runners/VisualRunner/Converters/RunStatusToColorConverter.cs b/src/TestUtils/src/DeviceTests.Runners/VisualRunner/Converters/RunStatusToColorConverter.cs
index f47e9e6a02c3..5c1eb9747cd1 100644
--- a/src/TestUtils/src/DeviceTests.Runners/VisualRunner/Converters/RunStatusToColorConverter.cs
+++ b/src/TestUtils/src/DeviceTests.Runners/VisualRunner/Converters/RunStatusToColorConverter.cs
@@ -8,7 +8,7 @@ namespace Microsoft.Maui.TestUtils.DeviceTests.Runners.VisualRunner
 {
 	class RunStatusToColorConverter : IValueConverter
 	{
-		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
 		{
 			if (value is not RunStatus status || Application.Current == null)
 				return Colors.Red;
@@ -24,7 +24,7 @@ public object Convert(object value, Type targetType, object parameter, CultureIn
 			};
 		}
 
-		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) =>
+		public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture) =>
 			throw new NotImplementedException();
 	}
 }
\ No newline at end of file