diff --git a/lib/ui/study_calendar_screen.dart b/lib/ui/study_calendar_screen.dart
index 9b1404d..5856a54 100644
--- a/lib/ui/study_calendar_screen.dart
+++ b/lib/ui/study_calendar_screen.dart
@@ -187,6 +187,12 @@ class _StudyCalendarScreenState extends State<StudyCalendarScreen> {
     );
   }
 
+  /// 넓은 화면(웹 데스크톱)에서 내용이 양옆으로 늘어지지 않게 가운데 최대 440 폭으로 맞춘다.
+  double _sidePad(BuildContext context) {
+    final width = MediaQuery.of(context).size.width;
+    return ((width - 440) / 2).clamp(16.0, double.infinity);
+  }
+
   @override
   Widget build(BuildContext context) {
     return ListenableBuilder(
@@ -208,7 +214,12 @@ class _StudyCalendarScreenState extends State<StudyCalendarScreen> {
           body: _controller.isLoading
               ? const Center(child: CircularProgressIndicator())
               : ListView(
-                  padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
+                  padding: EdgeInsets.fromLTRB(
+                    _sidePad(context),
+                    0,
+                    _sidePad(context),
+                    16,
+                  ),
                   children: [
                     const Center(child: TitlePill('출석 달력')),
                     const SizedBox(height: 16),
@@ -269,9 +280,9 @@ class _StudyCalendarScreenState extends State<StudyCalendarScreen> {
                       gridDelegate:
                           const SliverGridDelegateWithFixedCrossAxisCount(
                             crossAxisCount: 7,
-                            mainAxisSpacing: 6,
-                            crossAxisSpacing: 6,
-                            childAspectRatio: 0.85,
+                            mainAxisSpacing: 4,
+                            crossAxisSpacing: 4,
+                            childAspectRatio: 1.0,
                           ),
                       itemCount: leadingBlanks + daysInMonth,
                       itemBuilder: (context, index) {
diff --git a/lib/ui/teacher_call_screen.dart b/lib/ui/teacher_call_screen.dart
index ccd8713..71a660d 100644
--- a/lib/ui/teacher_call_screen.dart
+++ b/lib/ui/teacher_call_screen.dart
@@ -71,6 +71,12 @@ class _TeacherCallScreenState extends State<TeacherCallScreen> {
     );
   }
 
+  /// 넓은 화면(웹 데스크톱)에서 내용이 양옆으로 늘어지지 않게 가운데 최대 560 폭으로 맞춘다.
+  double _sidePad(BuildContext context) {
+    final width = MediaQuery.of(context).size.width;
+    return ((width - 560) / 2).clamp(16.0, double.infinity);
+  }
+
   @override
   Widget build(BuildContext context) {
     return ListenableBuilder(
@@ -93,7 +99,12 @@ class _TeacherCallScreenState extends State<TeacherCallScreen> {
               : RefreshIndicator(
                   onRefresh: _controller.refresh,
                   child: ListView(
-                    padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
+                    padding: EdgeInsets.fromLTRB(
+                      _sidePad(context),
+                      0,
+                      _sidePad(context),
+                      16,
+                    ),
                     children: [
                       const Center(child: TitlePill('선생님 호출')),
                       const SizedBox(height: 16),