diff --git a/packages/flutter/lib/src/material/dialog.dart b/packages/flutter/lib/src/material/dialog.dart
index 63d2b42..9f3a967 100644
--- a/packages/flutter/lib/src/material/dialog.dart
+++ b/packages/flutter/lib/src/material/dialog.dart
@@ -24,8 +24,6 @@
 
 const EdgeInsets _defaultInsetPadding = EdgeInsets.symmetric(horizontal: 40.0, vertical: 24.0);
 
-const BoxConstraints _dialogConstraints = BoxConstraints(minWidth: 280.0, maxWidth: 560.0, maxHeight: 560.0);
-
 /// A Material Design dialog.
 ///
 /// This dialog widget does not have any opinion about the contents of the
@@ -234,7 +232,7 @@
       dialogChild = Align(
         alignment: alignment ?? dialogTheme.alignment ?? defaults.alignment!,
         child: ConstrainedBox(
-          constraints: _constraintsScaleFactor(MediaQuery.of(context).textScaleFactor, theme.useMaterial3),
+          constraints: const BoxConstraints(minWidth: 280.0),
           child: Material(
             color: backgroundColor ?? dialogTheme.backgroundColor ?? Theme.of(context).dialogBackgroundColor,
             elevation: elevation ?? dialogTheme.elevation ?? defaults.elevation!,
@@ -1263,7 +1261,7 @@
     Widget dialogChild = IntrinsicWidth(
       stepWidth: 56.0,
       child: ConstrainedBox(
-        constraints: _constraintsScaleFactor(MediaQuery.of(context).textScaleFactor, theme.useMaterial3),
+        constraints: const BoxConstraints(minWidth: 280.0),
         child: Column(
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.stretch,
@@ -1589,17 +1587,6 @@
   return lerpDouble(1.0, 1.0 / 3.0, clampedTextScaleFactor - 1.0)!;
 }
 
-BoxConstraints _constraintsScaleFactor(double textScaleFactor, bool useMaterial3) {
-  if (!useMaterial3) {
-    return const BoxConstraints(minWidth: 280.0);
-  } else {
-    return textScaleFactor == 1.0
-      ? _dialogConstraints
-      // Scale the max height of the dialog by the text scale factor to aid in readability.
-      : _dialogConstraints.copyWith(maxHeight: _dialogConstraints.maxHeight * textScaleFactor);
-  }
-}
-
 // Hand coded defaults based on Material Design 2.
 class _DialogDefaultsM2 extends DialogTheme {
   _DialogDefaultsM2(this.context)
diff --git a/packages/flutter/test/material/dialog_test.dart b/packages/flutter/test/material/dialog_test.dart
index f010e51..df5c649 100644
--- a/packages/flutter/test/material/dialog_test.dart
+++ b/packages/flutter/test/material/dialog_test.dart
@@ -5,7 +5,6 @@
 import 'dart:ui';
 
 import 'package:flutter/cupertino.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
@@ -62,16 +61,6 @@
   return find.ancestor(of: find.byType(OverflowBar), matching: find.byType(Padding)).first;
 }
 
-// In the case of [AlertDialog], it takes up the entire screen, since it also
-// contains the scrim. The first [Material] child of [AlertDialog] is the actual
-// dialog itself.
-Size _getDialogSize(WidgetTester tester) => tester.getSize(
-  find.descendant(
-    of: find.byType(AlertDialog),
-    matching: find.byType(Material),
-  ).first,
-);
-
 const ShapeBorder _defaultM2DialogShape = RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(4.0)));
 final ShapeBorder _defaultM3DialogShape =  RoundedRectangleBorder(borderRadius: BorderRadius.circular(28.0));
 
@@ -155,8 +144,6 @@
     expect(material3Widget.color, material3Theme.colorScheme.surface);
     expect(material3Widget.shape, _defaultM3DialogShape);
     expect(material3Widget.elevation, 6.0);
-    // For some unknown reason, one pixel wider on web (HTML).
-    expect(_getDialogSize(tester),  Size(280.0, isBrowser && !isCanvasKit ? 141.0 : 140.0));
   });
 
   testWidgets('Dialog.fullscreen Defaults', (WidgetTester tester) async {
@@ -350,26 +337,6 @@
     expect(bottomLeft.dy, 576.0);
   });
 
-  testWidgets('Dialog respects constraints with large content on large screens', (WidgetTester tester) async {
-    const AlertDialog dialog = AlertDialog(
-      actions: <Widget>[ ],
-      content: SizedBox(
-        width: 1000.0,
-        height: 1000.0,
-      ),
-    );
-
-    tester.view.physicalSize = const Size(2000, 2000);
-    addTearDown(tester.view.resetPhysicalSize);
-
-    await tester.pumpWidget(_buildAppWithDialog(dialog, theme: material3Theme));
-
-    await tester.tap(find.text('X'));
-    await tester.pumpAndSettle();
-
-    expect(_getDialogSize(tester), const Size(560.0, 560.0));
-  });
-
   testWidgets('Simple dialog control test', (WidgetTester tester) async {
     await tester.pumpWidget(
       const MaterialApp(
@@ -626,8 +593,15 @@
     await tester.tap(find.text('X'));
     await tester.pumpAndSettle();
 
-
-    final Size dialogSize = _getDialogSize(tester);
+    // The [AlertDialog] is the entire screen, since it also contains the scrim.
+    // The first [Material] child of [AlertDialog] is the actual dialog
+    // itself.
+    final Size dialogSize = tester.getSize(
+      find.descendant(
+        of: find.byType(AlertDialog),
+        matching: find.byType(Material),
+      ).first,
+    );
     final Size actionsSize = tester.getSize(_findButtonBar());
 
     expect(actionsSize.width, dialogSize.width);
@@ -655,7 +629,15 @@
     await tester.tap(find.text('X'));
     await tester.pumpAndSettle();
 
-    final Size dialogSize = _getDialogSize(tester);
+    // The [AlertDialog] is the entire screen, since it also contains the scrim.
+    // The first [Material] child of [AlertDialog] is the actual dialog
+    // itself.
+    final Size dialogSize = tester.getSize(
+      find.descendant(
+        of: find.byType(AlertDialog),
+        matching: find.byType(Material),
+      ).first,
+    );
     final Size actionsSize = tester.getSize(find.byType(OverflowBar));
 
     expect(actionsSize.width, dialogSize.width - (30.0 * 2));
diff --git a/packages/flutter/test/material/time_picker_test.dart b/packages/flutter/test/material/time_picker_test.dart
index be79d70..4ecec0f 100644
--- a/packages/flutter/test/material/time_picker_test.dart
+++ b/packages/flutter/test/material/time_picker_test.dart
@@ -5,7 +5,6 @@
 @TestOn('!chrome')
 library;
 
-import 'dart:math';
 import 'dart:ui';
 
 import 'package:flutter/material.dart';
@@ -427,7 +426,7 @@
             tester.view.devicePixelRatio = 1;
             await mediaQueryBoilerplate(tester, materialType: materialType);
 
-            width = min(timePickerPortraitSize.width + padding.horizontal, 560); // width is limited to 560
+            width = timePickerPortraitSize.width + padding.horizontal;
             height = timePickerPortraitSize.height + padding.vertical;
             expect(
               tester.getSize(find.byWidget(getMaterialFromDialog(tester))),
@@ -446,7 +445,7 @@
               materialType: materialType,
             );
 
-            width =  min(timePickerLandscapeSize.width + padding.horizontal, 560); // width is limited to 560
+            width =  timePickerLandscapeSize.width + padding.horizontal;
             height = timePickerLandscapeSize.height + padding.vertical;
             expect(
               tester.getSize(find.byWidget(getMaterialFromDialog(tester))),
@@ -750,10 +749,10 @@
             expect(tester.getBottomLeft(find.text(okString)).dx, 616);
             expect(tester.getBottomRight(find.text(cancelString)).dx, 582);
           case MaterialType.material3:
-            expect(tester.getTopLeft(find.text(selectTimeString)), equals(const Offset(144, 129)));
-            expect(tester.getBottomRight(find.text(selectTimeString)), equals(const Offset(298.0, 143.0)));
-            expect(tester.getBottomLeft(find.text(okString)).dx, 610);
-            expect(tester.getBottomRight(find.text(cancelString)).dx, 572);
+            expect(tester.getTopLeft(find.text(selectTimeString)), equals(const Offset(138, 129)));
+            expect(tester.getBottomRight(find.text(selectTimeString)), equals(const Offset(292.0, 143.0)));
+            expect(tester.getBottomLeft(find.text(okString)).dx, 616);
+            expect(tester.getBottomRight(find.text(cancelString)).dx, 578);
         }
 
         await tester.tap(find.text(okString));
@@ -771,11 +770,11 @@
             expect(tester.getBottomRight(find.text(okString)).dx, 184);
             expect(tester.getBottomLeft(find.text(cancelString)).dx, 218);
           case MaterialType.material3:
-            expect(tester.getTopLeft(find.text(selectTimeString)), equals(const Offset(502, 129)));
-            expect(tester.getBottomRight(find.text(selectTimeString)), equals(const Offset(656, 143)));
-            expect(tester.getBottomLeft(find.text(okString)).dx, 162);
-            expect(tester.getBottomRight(find.text(okString)).dx, 190);
-            expect(tester.getBottomLeft(find.text(cancelString)).dx, 228);
+            expect(tester.getTopLeft(find.text(selectTimeString)), equals(const Offset(508, 129)));
+            expect(tester.getBottomRight(find.text(selectTimeString)), equals(const Offset(662, 143)));
+            expect(tester.getBottomLeft(find.text(okString)).dx, 156);
+            expect(tester.getBottomRight(find.text(okString)).dx, 184);
+            expect(tester.getBottomLeft(find.text(cancelString)).dx, 222);
         }
 
         await tester.tap(find.text(okString));