diff --git a/src/duckstation-qt/cheatmanagerdialog.cpp b/src/duckstation-qt/cheatmanagerdialog.cpp
index c8bc91a17..b78ce52ac 100644
--- a/src/duckstation-qt/cheatmanagerdialog.cpp
+++ b/src/duckstation-qt/cheatmanagerdialog.cpp
@@ -17,6 +17,10 @@
 #include <array>
 #include <utility>
 
+static constexpr std::array<const char*, 6> s_size_strings = {
+  {QT_TR_NOOP("Byte"), QT_TR_NOOP("Halfword"), QT_TR_NOOP("Word"), QT_TR_NOOP("Signed Byte"),
+   QT_TR_NOOP("Signed Halfword"), QT_TR_NOOP("Signed Word")}};
+
 static QString formatHexValue(u32 value)
 {
   return QStringLiteral("0x%1").arg(static_cast<uint>(value), 8, 16, QChar('0'));
@@ -126,6 +130,7 @@ void CheatManagerDialog::connectUi()
     updateResults();
   });
   connect(m_ui.scanAddWatch, &QPushButton::clicked, this, &CheatManagerDialog::addToWatchClicked);
+  connect(m_ui.scanAddManualAddress, &QPushButton::clicked, this, &CheatManagerDialog::addManualWatchAddressClicked);
   connect(m_ui.scanRemoveWatch, &QPushButton::clicked, this, &CheatManagerDialog::removeWatchClicked);
   connect(m_ui.scanTable, &QTableWidget::currentItemChanged, this, &CheatManagerDialog::scanCurrentItemChanged);
   connect(m_ui.watchTable, &QTableWidget::currentItemChanged, this, &CheatManagerDialog::watchCurrentItemChanged);
@@ -628,6 +633,27 @@ void CheatManagerDialog::addToWatchClicked()
   updateWatch();
 }
 
+void CheatManagerDialog::addManualWatchAddressClicked()
+{
+  std::optional<unsigned> address = QtUtils::PromptForAddress(this, windowTitle(), tr("Enter memory address:"));
+  if (!address.has_value())
+    return;
+
+  QStringList items;
+  for (const char* title : s_size_strings)
+    items.append(tr(title));
+
+  bool ok = false;
+  QString selected_item(QInputDialog::getItem(this, windowTitle(), tr("Select data size:"), items, 0, false, &ok));
+  int index = items.indexOf(selected_item);
+  if (index < 0 || !ok)
+    return;
+
+  m_watch.AddEntry(StringUtil::StdStringFromFormat("0x%08x", address.value()), address.value(),
+                   static_cast<MemoryAccessSize>(index % 3), (index > 3), false);
+  updateWatch();
+}
+
 void CheatManagerDialog::removeWatchClicked()
 {
   const int index = getSelectedWatchIndex();
@@ -795,10 +821,6 @@ void CheatManagerDialog::updateResultsValues()
 
 void CheatManagerDialog::updateWatch()
 {
-  static constexpr std::array<const char*, 6> size_strings = {
-    {QT_TR_NOOP("Byte"), QT_TR_NOOP("Halfword"), QT_TR_NOOP("Word"), QT_TR_NOOP("Signed Byte"),
-     QT_TR_NOOP("Signed Halfword"), QT_TR_NOOP("Signed Word")}};
-
   m_watch.UpdateValues();
 
   QSignalBlocker sb(m_ui.watchTable);
@@ -825,7 +847,7 @@ void CheatManagerDialog::updateWatch()
       m_ui.watchTable->setItem(row, 2, address_item);
 
       QTableWidgetItem* size_item =
-        new QTableWidgetItem(tr(size_strings[static_cast<u32>(res.size) + (res.is_signed ? 3 : 0)]));
+        new QTableWidgetItem(tr(s_size_strings[static_cast<u32>(res.size) + (res.is_signed ? 3 : 0)]));
       size_item->setFlags(address_item->flags() & ~(Qt::ItemIsEditable));
       m_ui.watchTable->setItem(row, 3, size_item);
 
diff --git a/src/duckstation-qt/cheatmanagerdialog.h b/src/duckstation-qt/cheatmanagerdialog.h
index 4826f7d3a..10b7d4d19 100644
--- a/src/duckstation-qt/cheatmanagerdialog.h
+++ b/src/duckstation-qt/cheatmanagerdialog.h
@@ -42,6 +42,7 @@ private Q_SLOTS:
   void exportClicked();
 
   void addToWatchClicked();
+  void addManualWatchAddressClicked();
   void removeWatchClicked();
   void scanCurrentItemChanged(QTableWidgetItem* current, QTableWidgetItem* previous);
   void watchCurrentItemChanged(QTableWidgetItem* current, QTableWidgetItem* previous);
diff --git a/src/duckstation-qt/cheatmanagerdialog.ui b/src/duckstation-qt/cheatmanagerdialog.ui
index 45790b4f3..08c76f6f8 100644
--- a/src/duckstation-qt/cheatmanagerdialog.ui
+++ b/src/duckstation-qt/cheatmanagerdialog.ui
@@ -510,9 +510,6 @@
              </item>
              <item>
               <widget class="QPushButton" name="scanAddManualAddress">
-               <property name="enabled">
-                <bool>false</bool>
-               </property>
                <property name="text">
                 <string>Add Manual Address</string>
                </property>
diff --git a/src/duckstation-qt/debuggerwindow.cpp b/src/duckstation-qt/debuggerwindow.cpp
index 90017665c..0220e3c87 100644
--- a/src/duckstation-qt/debuggerwindow.cpp
+++ b/src/duckstation-qt/debuggerwindow.cpp
@@ -2,10 +2,10 @@
 #include "core/cpu_core_private.h"
 #include "debuggermodels.h"
 #include "qthostinterface.h"
+#include "qtutils.h"
 #include <QtCore/QSignalBlocker>
 #include <QtGui/QFontDatabase>
 #include <QtWidgets/QFileDialog>
-#include <QtWidgets/QInputDialog>
 #include <QtWidgets/QMessageBox>
 
 DebuggerWindow::DebuggerWindow(QWidget* parent /* = nullptr */)
@@ -103,7 +103,8 @@ void DebuggerWindow::onGoToPCTriggered()
 
 void DebuggerWindow::onGoToAddressTriggered()
 {
-  std::optional<VirtualMemoryAddress> address = promptForAddress(tr("Enter code address:"));
+  std::optional<VirtualMemoryAddress> address =
+    QtUtils::PromptForAddress(this, windowTitle(), tr("Enter code address:"));
   if (!address.has_value())
     return;
 
@@ -112,7 +113,8 @@ void DebuggerWindow::onGoToAddressTriggered()
 
 void DebuggerWindow::onDumpAddressTriggered()
 {
-  std::optional<VirtualMemoryAddress> address = promptForAddress(tr("Enter memory address:"));
+  std::optional<VirtualMemoryAddress> address =
+    QtUtils::PromptForAddress(this, windowTitle(), tr("Enter memory address:"));
   if (!address.has_value())
     return;
 
@@ -126,7 +128,8 @@ void DebuggerWindow::onFollowAddressTriggered()
 
 void DebuggerWindow::onAddBreakpointTriggered()
 {
-  std::optional<VirtualMemoryAddress> address = promptForAddress(tr("Enter code address:"));
+  std::optional<VirtualMemoryAddress> address =
+    QtUtils::PromptForAddress(this, windowTitle(), tr("Enter code address:"));
   if (!address.has_value())
     return;
 
@@ -515,31 +518,6 @@ void DebuggerWindow::clearBreakpoints()
   CPU::ClearBreakpoints();
 }
 
-std::optional<VirtualMemoryAddress> DebuggerWindow::promptForAddress(const QString& label)
-{
-  const QString address_str(QInputDialog::getText(this, windowTitle(), tr("Enter memory address:")));
-  if (address_str.isEmpty())
-    return std::nullopt;
-
-  bool ok;
-  uint address;
-  if (address_str.startsWith("0x"))
-    address = address_str.midRef(2).toUInt(&ok, 16);
-  else if (address_str[0] == '0')
-    address = address_str.midRef(2).toUInt(&ok, 8);
-  else
-    address = address_str.midRef(2).toUInt(&ok, 8);
-
-  if (!ok)
-  {
-    QMessageBox::critical(this, windowTitle(),
-                          tr("Invalid address. It should be in hex (0x12345678) or decimal (12345678)"));
-    return std::nullopt;
-  }
-
-  return address;
-}
-
 std::optional<VirtualMemoryAddress> DebuggerWindow::getSelectedCodeAddress()
 {
   QItemSelectionModel* sel_model = m_ui.codeView->selectionModel();
diff --git a/src/duckstation-qt/debuggerwindow.h b/src/duckstation-qt/debuggerwindow.h
index dd952efca..08e3f513a 100644
--- a/src/duckstation-qt/debuggerwindow.h
+++ b/src/duckstation-qt/debuggerwindow.h
@@ -60,7 +60,6 @@ private:
   void setMemoryViewRegion(Bus::MemoryRegion region);
   void toggleBreakpoint(VirtualMemoryAddress address);
   void clearBreakpoints();
-  std::optional<VirtualMemoryAddress> promptForAddress(const QString& label);
   std::optional<VirtualMemoryAddress> getSelectedCodeAddress();
   bool tryFollowLoadStore(VirtualMemoryAddress address);
   void scrollToCodeAddress(VirtualMemoryAddress address);
diff --git a/src/duckstation-qt/qtutils.cpp b/src/duckstation-qt/qtutils.cpp
index ad48dc602..c68b63e4a 100644
--- a/src/duckstation-qt/qtutils.cpp
+++ b/src/duckstation-qt/qtutils.cpp
@@ -8,6 +8,7 @@
 #include <QtWidgets/QComboBox>
 #include <QtWidgets/QDialog>
 #include <QtWidgets/QHeaderView>
+#include <QtWidgets/QInputDialog>
 #include <QtWidgets/QMainWindow>
 #include <QtWidgets/QMessageBox>
 #include <QtWidgets/QScrollBar>
@@ -736,4 +737,31 @@ void FillComboBoxWithEmulationSpeeds(QComboBox* cb)
   }
 }
 
+std::optional<unsigned> PromptForAddress(QWidget* parent, const QString& title, const QString& label)
+{
+  const QString address_str(
+    QInputDialog::getText(parent, title, qApp->translate("DebuggerWindow", "Enter memory address:")));
+  if (address_str.isEmpty())
+    return std::nullopt;
+
+  bool ok;
+  uint address;
+  if (address_str.startsWith("0x"))
+    address = address_str.midRef(2).toUInt(&ok, 16);
+  else if (address_str[0] == '0' && address_str.length() > 1)
+    address = address_str.midRef(1).toUInt(&ok, 8);
+  else
+    address = address_str.toUInt(&ok, 10);
+
+  if (!ok)
+  {
+    QMessageBox::critical(
+      parent, title,
+      qApp->translate("DebuggerWindow", "Invalid address. It should be in hex (0x12345678) or decimal (12345678)"));
+    return std::nullopt;
+  }
+
+  return address;
+}
+
 } // namespace QtUtils
\ No newline at end of file
diff --git a/src/duckstation-qt/qtutils.h b/src/duckstation-qt/qtutils.h
index 9bcf4c3cf..77025002a 100644
--- a/src/duckstation-qt/qtutils.h
+++ b/src/duckstation-qt/qtutils.h
@@ -71,4 +71,7 @@ void FillComboBoxWithMSAAModes(QComboBox* cb);
 /// Fills a combo box with emulation speed options.
 void FillComboBoxWithEmulationSpeeds(QComboBox* cb);
 
+/// Prompts for an address in decimal, octal, or hex.
+std::optional<unsigned> PromptForAddress(QWidget* parent, const QString& title, const QString& label);
+
 } // namespace QtUtils
\ No newline at end of file