diff --git a/src/HexManiac.Core/ViewModels/ViewPort.cs b/src/HexManiac.Core/ViewModels/ViewPort.cs
index 991d0450..fc3eca72 100644
--- a/src/HexManiac.Core/ViewModels/ViewPort.cs
+++ b/src/HexManiac.Core/ViewModels/ViewPort.cs
@@ -334,6 +334,13 @@ namespace HavenSoft.HexManiac.Core.ViewModels {
          get => selectedLength;
          set => Set(ref selectedLength, value, SelectedLengthChanged);
       }
+
+      private bool base10SelectionLength;
+      public bool Base10SelectionLength {
+         get => base10SelectionLength;
+         set => Set(ref base10SelectionLength, value, arg => UpdateSelectedAddress());
+      }
+
       public string SelectedElementName => selectedElementName;
 
       private void UpdateSelectedAddress() {
@@ -346,7 +353,8 @@ namespace HavenSoft.HexManiac.Core.ViewModels {
          Set(ref selectedElementName, elementName ?? string.Empty, nameof(SelectedElementName));
 
          int length = Math.Abs(dataIndex1 - dataIndex2) + 1;
-         Set(ref selectedLength, length.ToString("X1"), nameof(SelectedLength));
+         var lengthText = base10SelectionLength ? length.ToString() : length.ToString("X1");
+         Set(ref selectedLength, lengthText, nameof(SelectedLength));
       }
 
       private void SelectedAddressChanged(string old) {
@@ -355,7 +363,12 @@ namespace HavenSoft.HexManiac.Core.ViewModels {
       }
 
       private void SelectedLengthChanged(string old) {
-         if (!selectedLength.TryParseHex(out int length)) return;
+         int length;
+         if (base10SelectionLength) {
+            if (!int.TryParse(selectedLength, out length)) return;
+         } else {
+            if (!selectedLength.TryParseHex(out length)) return;
+         }
          var left = Math.Min(ConvertViewPointToAddress(SelectionStart), ConvertViewPointToAddress(SelectionEnd));
          SelectionStart = ConvertAddressToViewPoint(left);
          SelectionEnd = ConvertAddressToViewPoint(left + length - 1);
diff --git a/src/HexManiac.WPF/Controls/AngleTextBox.xaml.cs b/src/HexManiac.WPF/Controls/AngleTextBox.xaml.cs
index 52395711..51ec2015 100644
--- a/src/HexManiac.WPF/Controls/AngleTextBox.xaml.cs
+++ b/src/HexManiac.WPF/Controls/AngleTextBox.xaml.cs
@@ -17,6 +17,7 @@ namespace HavenSoft.HexManiac.WPF.Controls {
    public partial class AngleTextBox {
 
       private static readonly Thickness TextContentThickness = new(0, 1, 0, 1);
+      private ContextMenu menu;
 
       private bool keepTextBoxForContextMenu;
       public TextBox GetTextBox() {
@@ -146,6 +147,12 @@ namespace HavenSoft.HexManiac.WPF.Controls {
                BorderThickness = TextContentThickness,
                VerticalAlignment = VerticalAlignment.Stretch,
             };
+            if (ContextMenu != null) {
+               menu = ContextMenu;
+               ContextMenu = null;
+            }
+            if (menu != null) textBox.ContextMenu = menu;
+
             if (DataContext is FieldArrayElementViewModel) textBox.InputBindings.Add(
                new KeyBinding {
                   Key = Key.Enter,
diff --git a/src/HexManiac.WPF/Controls/TabView.xaml b/src/HexManiac.WPF/Controls/TabView.xaml
index 2f299412..a0c39fa9 100644
--- a/src/HexManiac.WPF/Controls/TabView.xaml
+++ b/src/HexManiac.WPF/Controls/TabView.xaml
@@ -44,7 +44,14 @@
             <hsg3hv:AngleBorder DockPanel.Dock="Left" Direction="Left" Margin="5,0,0,0">
                <TextBlock Text="Length:" />
             </hsg3hv:AngleBorder>
-            <hsg3hv:AngleTextBox DockPanel.Dock="Left" Width="40" Direction="Out" TextBinding="{Binding SelectedLength, UpdateSourceTrigger=PropertyChanged}" Margin="0"/>
+            <hsg3hv:AngleTextBox DockPanel.Dock="Left" Width="40" Direction="Out" Margin="0"
+               TextBinding="{Binding SelectedLength, UpdateSourceTrigger=PropertyChanged}">
+               <hsg3hv:AngleTextBox.ContextMenu>
+                  <ContextMenu>
+                     <MenuItem IsCheckable="True" IsChecked="{Binding Base10SelectionLength}" Header="Display Length in Base 10"/>
+                  </ContextMenu>
+               </hsg3hv:AngleTextBox.ContextMenu>
+            </hsg3hv:AngleTextBox>
             <TextBlock DockPanel.Dock="Left" Text="{Binding SelectedElementName}" Margin="5,0,0,0"/>
             <Grid HorizontalAlignment="Right" DockPanel.Dock="Right">
                <TextBlock Margin="5,0,0,0" Text="{Binding SelectedBytes}" MouseRightButtonUp="BytesShowMenu"/>