diff --git a/src/components/ui/calendar.tsx b/src/components/ui/calendar.tsx
index c507030..225d827 100644
--- a/src/components/ui/calendar.tsx
+++ b/src/components/ui/calendar.tsx
@@ -10,6 +10,7 @@ import { DayButton, DayPicker, getDefaultClassNames } from "react-day-picker"
 
 import { cn } from "@/lib/utils"
 import { Button, buttonVariants } from "@/components/ui/button"
+import { format } from "date-fns"
 
 function Calendar({
   className,
@@ -36,8 +37,28 @@ function Calendar({
       )}
       captionLayout={captionLayout}
       formatters={{
+        formatCaption: (month) => format(month, "yyyy년 MM월"),
+        formatWeekdayName: (weekday) => {
+          switch(weekday.getDay()) {
+            case 0:
+              return '일';
+            case 1:
+              return '월';
+            case 2:
+              return '화';
+            case 3:
+              return '수';
+            case 4:
+              return '목';
+            case 5:
+              return '금';
+            case 6:
+              return '토';
+          }
+          return '';
+        },
         formatMonthDropdown: (date) =>
-          date.toLocaleString("default", { month: "short" }),
+          date.toLocaleString("", { month: "short" }),
         ...formatters,
       }}
       classNames={{
diff --git a/src/index.css b/src/index.css
index 7510af1..68589cb 100644
--- a/src/index.css
+++ b/src/index.css
@@ -134,6 +134,10 @@ input[type="number"]::-webkit-outer-spin-button {
   margin: 0;
 }
 
+.rdp-day {
+  aspect-ratio: unset;
+}
+
 /* Firefox */
 input[type="number"] {
   -moz-appearance: textfield;
diff --git a/src/ui/component/calendar/CustomCalendar.tsx b/src/ui/component/calendar/CustomCalendar.tsx
new file mode 100644
index 0000000..e7cbbbd
--- /dev/null
+++ b/src/ui/component/calendar/CustomCalendar.tsx
@@ -0,0 +1,101 @@
+import { cn } from "@/lib/utils";
+import { Calendar } from "@/components/ui/calendar";
+import { useLayoutEffect, useRef, useState } from "react";
+import { dateMatchModifiers, getDefaultClassNames } from "react-day-picker";
+
+interface CustomCalendarProps {
+  data?: any;
+}
+
+export const CustomCalendar = ({ data }: CustomCalendarProps) => {
+  const [weekCount, setWeekCount] = useState(5);
+  const defaultClassNames = getDefaultClassNames();
+  const containerRef = useRef<HTMLDivElement>(null);
+  const updateWeekCount = () => {
+    if (containerRef === null) return;
+    if (!containerRef.current) return;
+    
+    const weeks = containerRef.current.querySelectorAll('.rdp-week');
+
+    if (weeks?.length) setWeekCount(weeks.length);
+  }
+
+  useLayoutEffect(() => {
+    updateWeekCount();
+  }, []);
+
+  return (
+    <div
+      className="w-full h-full"
+      ref={containerRef}
+    >
+      <Calendar 
+        mode="single"
+        className="h-full w-full border rounded-lg"
+        onMonthChange={() => {
+          // month 바뀐 직후 DOM 변화가 생기므로 다음 프레임에서 계산
+          requestAnimationFrame(() => {
+            updateWeekCount();
+          });
+        }}
+        labels={{
+          labelDayButton: (date, modifiers) => {
+            console.log(modifiers);
+            return `${date.getDate()}`
+          }
+        }}
+        classNames={{
+          months: cn(
+            defaultClassNames.months,
+            "w-full h-full relative"
+          ),
+          nav: cn(
+            defaultClassNames.nav,
+            "flex w-full item-center gap-1 justify-around absolute top-0 inset-x-0"
+          ),
+          month: cn(
+            defaultClassNames.month,
+            "h-full w-full flex flex-col"
+          ),
+          month_grid: cn(
+            defaultClassNames.month_grid,
+            "w-full h-full flex-1"
+          ),
+          weeks: cn(
+            defaultClassNames.weeks,
+            "w-full h-full"
+          ),
+          weekdays: cn(
+            defaultClassNames.weekdays,
+            "w-full"
+          ),
+          week: cn(
+            defaultClassNames.week,
+            `w-full`
+          ),
+          day: cn(
+            defaultClassNames.day,
+            `w-[calc(100%/7)]`
+          ),
+          day_button: cn(
+            defaultClassNames.day_button,
+            "h-full w-full flex p-2 justify-start items-start"
+          ),
+          selected: cn(
+            defaultClassNames.selected,
+            "h-full"
+          ),
+          today: cn(
+            defaultClassNames.today,
+            "h-full"
+          )
+        }}
+        styles={{
+          day: {
+            height: `calc(100%/${weekCount})`
+          }
+        }}
+      />
+    </div>
+  )
+}
\ No newline at end of file
diff --git a/src/ui/page/schedule/ScheduleMainPage.tsx b/src/ui/page/schedule/ScheduleMainPage.tsx
index 0ea282e..b1d0b0f 100644
--- a/src/ui/page/schedule/ScheduleMainPage.tsx
+++ b/src/ui/page/schedule/ScheduleMainPage.tsx
@@ -1,23 +1,11 @@
-import { Calendar } from "@/components/ui/calendar";
-import { cn } from "@/lib/utils";
-import { getDefaultClassNames } from "react-day-picker";
+import { CustomCalendar } from "@/ui/component/calendar/CustomCalendar";
 
 export function ScheduleMainPage() {
-  const defaultClassNames = getDefaultClassNames();
-
   return (
-    <div className="w-full h-full p-2">
-      <Calendar 
-        mode="single"
-        className="border w-full rounded-lg"
-        classNames={{
-          month_grid: cn(
-            defaultClassNames.month_grid,
-            "w-full"
-          ),
-          
-        }}
-      />
+    <div
+      className="w-full h-full p-2"
+    >
+      <CustomCalendar />
     </div>
   )
-}
\ No newline at end of file
+}