diff --git a/changes/issue-6521-convert-uptime-to-last-restarted b/changes/issue-6521-convert-uptime-to-last-restarted
new file mode 100644
index 0000000000..6218a64a5d
--- /dev/null
+++ b/changes/issue-6521-convert-uptime-to-last-restarted
@@ -0,0 +1 @@
+* Convert uptime column to last restarted on the Manage hosts page
\ No newline at end of file
diff --git a/frontend/pages/hosts/ManageHostsPage/HostTableConfig.tsx b/frontend/pages/hosts/ManageHostsPage/HostTableConfig.tsx
index 12aec6a180..e408abf2d4 100644
--- a/frontend/pages/hosts/ManageHostsPage/HostTableConfig.tsx
+++ b/frontend/pages/hosts/ManageHostsPage/HostTableConfig.tsx
@@ -15,7 +15,7 @@ import StatusCell from "components/TableContainer/DataTable/StatusCell/StatusCel
 import TextCell from "components/TableContainer/DataTable/TextCell/TextCell";
 import {
   humanHostMemory,
-  humanHostUptime,
+  humanHostLastRestart,
   humanHostLastSeen,
   humanHostDetailUpdated,
   hostTeamName,
@@ -324,7 +324,7 @@ const allHostTableHeaders: IDataColumn[] = [
     Cell: (cellProps: ICellProps) => <TextCell value={cellProps.cell.value} />,
   },
   {
-    title: "Uptime",
+    title: "Last restarted",
     Header: (cellProps: IHeaderProps) => (
       <HeaderCell
         value={cellProps.column.title}
@@ -332,9 +332,13 @@ const allHostTableHeaders: IDataColumn[] = [
       />
     ),
     accessor: "uptime",
-    Cell: (cellProps: ICellProps) => (
-      <TextCell value={cellProps.cell.value} formatter={humanHostUptime} />
-    ),
+    Cell: (cellProps: ICellProps) => {
+      const { uptime, detail_updated_at } = cellProps.row.original;
+
+      return (
+        <TextCell value={humanHostLastRestart(detail_updated_at, uptime)} />
+      );
+    },
   },
   {
     title: "CPU",
diff --git a/frontend/utilities/helpers.ts b/frontend/utilities/helpers.ts
index 75563e660e..487969f025 100644
--- a/frontend/utilities/helpers.ts
+++ b/frontend/utilities/helpers.ts
@@ -580,16 +580,6 @@ export const inMilliseconds = (nanoseconds: number): number => {
   return nanoseconds / NANOSECONDS_PER_MILLISECOND;
 };
 
-export const humanHostUptime = (uptimeInNanoseconds: number): string => {
-  const uptimeMilliseconds = inMilliseconds(uptimeInNanoseconds);
-  const restartDate = new Date();
-  restartDate.setMilliseconds(
-    restartDate.getMilliseconds() - uptimeMilliseconds
-  );
-
-  return formatDistanceToNow(new Date(restartDate), { addSuffix: true });
-};
-
 export const humanHostLastRestart = (
   detailUpdatedAt: string,
   uptime: number
@@ -817,7 +807,6 @@ export default {
   generateRole,
   generateTeam,
   greyCell,
-  humanHostUptime,
   humanHostLastSeen,
   humanHostEnrolled,
   humanHostMemory,