diff --git a/spa/src/components/diary-calendar.tsx b/spa/src/components/diary-calendar.tsx
new file mode 100644
index 0000000..26066e2
--- /dev/null
+++ b/spa/src/components/diary-calendar.tsx
@@ -0,0 +1,91 @@
+import { useMemo } from "react"
+import { Calendar } from "@/components/ui/calendar"
+import { posterUrl } from "@/lib/api/client"
+import type { DiaryEntryDto } from "@/lib/api/common"
+import type { DayButton } from "react-day-picker"
+
+type DiaryCalendarProps = {
+  entries: DiaryEntryDto[]
+  onSelectDate?: (entries: DiaryEntryDto[]) => void
+}
+
+function parseDate(dateStr: string): string {
+  return dateStr.slice(0, 10)
+}
+
+export function DiaryCalendar({ entries, onSelectDate }: DiaryCalendarProps) {
+  const byDate = useMemo(() => {
+    const map = new Map<string, DiaryEntryDto[]>()
+    for (const e of entries) {
+      const key = parseDate(e.review.watched_at)
+      const list = map.get(key)
+      if (list) list.push(e)
+      else map.set(key, [e])
+    }
+    return map
+  }, [entries])
+
+  const watchedDates = useMemo(
+    () => [...byDate.keys()].map((d) => new Date(d + "T00:00:00")),
+    [byDate],
+  )
+
+  return (
+    <Calendar
+      mode="single"
+      classNames={{
+        month: "flex w-full flex-col gap-2",
+        day: "group/day relative aspect-square h-full w-full rounded-(--cell-radius) p-0 text-center select-none",
+      }}
+      modifiers={{ watched: watchedDates }}
+      modifiersClassNames={{ watched: "bg-primary/20 rounded-(--cell-radius)" }}
+      onDayClick={(day) => {
+        const key = day.toISOString().slice(0, 10)
+        const dayEntries = byDate.get(key)
+        if (dayEntries?.length && onSelectDate) onSelectDate(dayEntries)
+      }}
+      components={{
+        DayButton: (props) => (
+          <CalendarDay {...props} byDate={byDate} />
+        ),
+      }}
+    />
+  )
+}
+
+function CalendarDay({
+  day,
+  byDate,
+  ...props
+}: React.ComponentProps<typeof DayButton> & {
+  byDate: Map<string, DiaryEntryDto[]>
+}) {
+  const key = day.date.toISOString().slice(0, 10)
+  const dayEntries = byDate.get(key)
+  const poster = dayEntries?.[0]?.movie.poster_path
+
+  return (
+    <button
+      type="button"
+      className="relative flex size-full min-h-10 flex-col items-center justify-start rounded-(--cell-radius) p-0.5 text-xs transition-colors hover:bg-muted/50"
+      {...props}
+    >
+      <span className="leading-tight">{day.date.getDate()}</span>
+      {poster && (
+        <img
+          src={posterUrl(poster)}
+          alt=""
+          className="mt-0.5 aspect-[2/3] w-full max-w-6 rounded-sm object-cover opacity-80"
+        />
+      )}
+      {dayEntries && dayEntries.length > 1 && (
+        <span className="absolute bottom-0.5 right-0.5 flex size-3.5 items-center justify-center rounded-full bg-primary text-[8px] font-bold text-primary-foreground">
+          {dayEntries.length}
+        </span>
+      )}
+      {dayEntries && dayEntries.length === 1 && !poster && (
+        <span className="mt-1 size-1.5 rounded-full bg-primary" />
+      )}
+    </button>
+  )
+}
diff --git a/spa/src/components/profile-view.tsx b/spa/src/components/profile-view.tsx
index ba99172..8cf2f35 100644
--- a/spa/src/components/profile-view.tsx
+++ b/spa/src/components/profile-view.tsx
@@ -17,6 +17,7 @@ import { useInfiniteDiary } from "@/features/diary"
 import { TimeAgo } from "@/components/time-ago"
 import { WATCH_MEDIUMS } from "@/lib/watch-mediums"
 import { ReviewDetailSheet } from "@/components/review-detail-sheet"
+import { DiaryCalendar } from "@/components/diary-calendar"
 import type { DiaryEntryDto } from "@/lib/api/common"
 import type { UserProfileResponse } from "@/features/users"
 
@@ -51,6 +52,7 @@ export function ProfileView({
   const profileTabs = [
     { value: "recent", label: t("profile.recent") },
     { value: "top_rated", label: t("profile.topRated") },
+    { value: "calendar", label: t("profile.calendar", { defaultValue: "Calendar" }) },
     { value: "trends", label: t("profile.trends") },
   ] as const
 
@@ -128,6 +130,7 @@ export function ProfileView({
                 search={search}
               />
             )}
+            {tab === "calendar" && <CalendarTab userId={userId} />}
             {tab === "trends" && <TrendsView data={data} />}
           </>
         )}
@@ -192,6 +195,45 @@ function DiaryTab({ sortBy, userId, search }: { sortBy: string; userId?: string;
   )
 }
 
+function CalendarTab({ userId }: { userId?: string }) {
+  const { data, isPending, hasNextPage, fetchNextPage } =
+    useInfiniteDiary({ sort_by: "date_desc", user_id: userId })
+  const items = data?.pages.flatMap((p) => p.items) ?? []
+  const [detailEntries, setDetailEntries] = useState<DiaryEntryDto[] | null>(null)
+  const [detailEntry, setDetailEntry] = useState<DiaryEntryDto | null>(null)
+
+  if (isPending) return <Skeleton className="h-80 w-full rounded-xl" />
+  if (hasNextPage) fetchNextPage()
+
+  return (
+    <>
+      <DiaryCalendar
+        entries={items}
+        onSelectDate={(entries) => {
+          if (entries.length === 1) setDetailEntry(entries[0]!)
+          else setDetailEntries(entries)
+        }}
+      />
+      {detailEntry && (
+        <ReviewDetailSheet
+          open={!!detailEntry}
+          onOpenChange={(open) => !open && setDetailEntry(null)}
+          movie={detailEntry.movie}
+          review={detailEntry.review}
+        />
+      )}
+      {detailEntries && (
+        <ReviewDetailSheet
+          open={!!detailEntries}
+          onOpenChange={(open) => !open && setDetailEntries(null)}
+          movie={detailEntries[0]!.movie}
+          review={detailEntries[0]!.review}
+        />
+      )}
+    </>
+  )
+}
+
 const trendChartConfig = {
   count: { label: "Movies", color: "var(--primary)" },
 } satisfies ChartConfig