diff --git a/lib/stub_ui/lib/geometry.dart b/lib/stub_ui/lib/geometry.dart
index 35f04ee07..17f18bbab 100644
--- a/lib/stub_ui/lib/geometry.dart
+++ b/lib/stub_ui/lib/geometry.dart
@@ -636,11 +636,20 @@ class Rect {
   /// Construct a rectangle that bounds the given circle.
   ///
   /// The `center` argument is assumed to be an offset from the origin.
-  Rect.fromCircle({ Offset center, double radius }) : this.fromLTRB(
-    center.dx - radius,
-    center.dy - radius,
-    center.dx + radius,
-    center.dy + radius,
+  Rect.fromCircle({ Offset center, double radius }) : this.fromCenter(
+    center: center,
+    width: radius * 2,
+    height: radius * 2,
+  );
+
+  /// Constructs a rectangle from its center point, width, and height.
+  ///
+  /// The `center` argument is assumed to be an offset from the origin.
+  Rect.fromCenter({ Offset center, double width, double height }) : this.fromLTRB(
+    center.dx - width / 2,
+    center.dy - height / 2,
+    center.dx + width / 2,
+    center.dy + height / 2,
   );
 
   /// Construct the smallest rectangle that encloses the given offsets, treating
diff --git a/lib/ui/geometry.dart b/lib/ui/geometry.dart
index 22298e723..0369f30c7 100644
--- a/lib/ui/geometry.dart
+++ b/lib/ui/geometry.dart
@@ -637,11 +637,20 @@ class Rect {
   /// Construct a rectangle that bounds the given circle.
   ///
   /// The `center` argument is assumed to be an offset from the origin.
-  Rect.fromCircle({ Offset center, double radius }) : this.fromLTRB(
-    center.dx - radius,
-    center.dy - radius,
-    center.dx + radius,
-    center.dy + radius,
+  Rect.fromCircle({ Offset center, double radius }) : this.fromCenter(
+    center: center,
+    width: radius * 2,
+    height: radius * 2,
+  );
+
+  /// Constructs a rectangle from its center point, width, and height.
+  ///
+  /// The `center` argument is assumed to be an offset from the origin.
+  Rect.fromCenter({ Offset center, double width, double height }) : this.fromLTRB(
+    center.dx - width / 2,
+    center.dy - height / 2,
+    center.dx + width / 2,
+    center.dy + height / 2,
   );
 
   /// Construct the smallest rectangle that encloses the given offsets, treating
diff --git a/testing/dart/geometry_test.dart b/testing/dart/geometry_test.dart
index 20445b862..3b87568d1 100644
--- a/testing/dart/geometry_test.dart
+++ b/testing/dart/geometry_test.dart
@@ -90,4 +90,26 @@ void main() {
     expect(const Size(-1.0, -1.0).aspectRatio, 1.0);
     expect(const Size(3.0, 4.0).aspectRatio, 3.0 / 4.0);
   });
+  test('Rect.fromCenter', () {
+    Rect rect = Rect.fromCenter(center: const Offset(1.0, 3.0), width: 5.0, height: 7.0);
+    expect(rect.left, -1.5);
+    expect(rect.top, -0.5);
+    expect(rect.right, 3.5);
+    expect(rect.bottom, 6.5);
+    rect = Rect.fromCenter(center: const Offset(0.0, 0.0), width: 0.0, height: 0.0);
+    expect(rect.left, 0.0);
+    expect(rect.top, 0.0);
+    expect(rect.right, 0.0);
+    expect(rect.bottom, 0.0);
+    rect = Rect.fromCenter(center: const Offset(double.nan, 0.0), width: 0.0, height: 0.0);
+    expect(rect.left, isNaN);
+    expect(rect.top, 0.0);
+    expect(rect.right, isNaN);
+    expect(rect.bottom, 0.0);
+    rect = Rect.fromCenter(center: const Offset(0.0, double.nan), width: 0.0, height: 0.0);
+    expect(rect.left, 0.0);
+    expect(rect.top, isNaN);
+    expect(rect.right, 0.0);
+    expect(rect.bottom, isNaN);
+  });
 }