diff --git a/server/src/wled_controller/static/js/core/ui.js b/server/src/wled_controller/static/js/core/ui.js
index 4b8b58e..b24e0a7 100644
--- a/server/src/wled_controller/static/js/core/ui.js
+++ b/server/src/wled_controller/static/js/core/ui.js
@@ -292,3 +292,13 @@ export function hideOverlaySpinner() {
     const overlay = document.getElementById('overlay-spinner');
     if (overlay) overlay.remove();
 }
+
+export function formatUptime(seconds) {
+    if (!seconds || seconds <= 0) return '-';
+    const h = Math.floor(seconds / 3600);
+    const m = Math.floor((seconds % 3600) / 60);
+    const s = Math.floor(seconds % 60);
+    if (h > 0) return t('time.hours_minutes', { h, m });
+    if (m > 0) return t('time.minutes_seconds', { m, s });
+    return t('time.seconds', { s });
+}
diff --git a/server/src/wled_controller/static/js/features/dashboard.js b/server/src/wled_controller/static/js/features/dashboard.js
index 286f1a1..224bd1d 100644
--- a/server/src/wled_controller/static/js/features/dashboard.js
+++ b/server/src/wled_controller/static/js/features/dashboard.js
@@ -5,7 +5,7 @@
 import { apiKey, _dashboardLoading, set_dashboardLoading, dashboardPollInterval, setDashboardPollInterval } from '../core/state.js';
 import { API_BASE, getHeaders, fetchWithAuth, escapeHtml } from '../core/api.js';
 import { t } from '../core/i18n.js';
-import { showToast } from '../core/ui.js';
+import { showToast, formatUptime } from '../core/ui.js';
 import { renderPerfSection, initPerfCharts, startPerfPolling, stopPerfPolling } from './perf-charts.js';
 import { startAutoRefresh } from './tabs.js';
 
@@ -292,16 +292,6 @@ function _sectionContent(sectionKey, itemsHtml) {
     return `<div class="dashboard-section-content"${isCollapsed ? ' style="display:none"' : ''}>${itemsHtml}</div>`;
 }
 
-function formatUptime(seconds) {
-    if (!seconds || seconds <= 0) return '-';
-    const h = Math.floor(seconds / 3600);
-    const m = Math.floor((seconds % 3600) / 60);
-    const s = Math.floor(seconds % 60);
-    if (h > 0) return t('time.hours_minutes', { h, m });
-    if (m > 0) return t('time.minutes_seconds', { m, s });
-    return t('time.seconds', { s });
-}
-
 export async function loadDashboard(forceFullRender = false) {
     if (_dashboardLoading) return;
     set_dashboardLoading(true);
@@ -356,12 +346,18 @@ export async function loadDashboard(forceFullRender = false) {
             const structureUnchanged = hasExistingDom && newRunningIds === prevRunningIds;
             if (structureUnchanged && !forceFullRender && running.length > 0) {
                 _updateRunningMetrics(running);
+                _cacheUptimeElements();
+                _startUptimeTimer();
+                startPerfPolling();
                 set_dashboardLoading(false);
                 return;
             }
             if (structureUnchanged && forceFullRender) {
                 if (running.length > 0) _updateRunningMetrics(running);
                 _updateProfilesInPlace(profiles);
+                _cacheUptimeElements();
+                _startUptimeTimer();
+                startPerfPolling();
                 set_dashboardLoading(false);
                 return;
             }
diff --git a/server/src/wled_controller/static/js/features/kc-targets.js b/server/src/wled_controller/static/js/features/kc-targets.js
index 1fd9b8d..97dac04 100644
--- a/server/src/wled_controller/static/js/features/kc-targets.js
+++ b/server/src/wled_controller/static/js/features/kc-targets.js
@@ -12,7 +12,7 @@ import {
 } from '../core/state.js';
 import { API_BASE, getHeaders, fetchWithAuth, escapeHtml } from '../core/api.js';
 import { t } from '../core/i18n.js';
-import { lockBody, showToast, showConfirm } from '../core/ui.js';
+import { lockBody, showToast, showConfirm, formatUptime } from '../core/ui.js';
 import { Modal } from '../core/modal.js';
 
 class KCEditorModal extends Modal {
@@ -116,6 +116,10 @@ export function createKCTargetCard(target, sourceMap, patternTemplateMap) {
                         <div class="metric-label">${t('device.metrics.errors')}</div>
                         <div class="metric-value">${metrics.errors_count || 0}</div>
                     </div>
+                    <div class="metric">
+                        <div class="metric-label">${t('device.metrics.uptime')}</div>
+                        <div class="metric-value">${formatUptime(metrics.uptime_seconds)}</div>
+                    </div>
                 </div>
                 ${state.timing_total_ms != null ? `
                 <div class="timing-breakdown">
diff --git a/server/src/wled_controller/static/js/features/targets.js b/server/src/wled_controller/static/js/features/targets.js
index e5d33f0..efe1aa3 100644
--- a/server/src/wled_controller/static/js/features/targets.js
+++ b/server/src/wled_controller/static/js/features/targets.js
@@ -11,7 +11,7 @@ import {
 } from '../core/state.js';
 import { API_BASE, getHeaders, fetchWithAuth, escapeHtml } from '../core/api.js';
 import { t } from '../core/i18n.js';
-import { showToast, showConfirm } from '../core/ui.js';
+import { showToast, showConfirm, formatUptime } from '../core/ui.js';
 import { Modal } from '../core/modal.js';
 import { createDeviceCard, attachDeviceListeners, fetchDeviceBrightness, _computeMaxFps } from './devices.js';
 import { createKCTargetCard, connectKCWebSocket, disconnectKCWebSocket } from './kc-targets.js';
@@ -696,6 +696,10 @@ export function createTargetCard(target, deviceMap, colorStripSourceMap) {
                         <div class="metric-label">${t('device.metrics.errors')}</div>
                         <div class="metric-value">${metrics.errors_count || 0}</div>
                     </div>
+                    <div class="metric">
+                        <div class="metric-label">${t('device.metrics.uptime')}</div>
+                        <div class="metric-value">${formatUptime(metrics.uptime_seconds)}</div>
+                    </div>
                 </div>
                 ` : ''}
             </div>
diff --git a/server/src/wled_controller/static/locales/en.json b/server/src/wled_controller/static/locales/en.json
index 0595eb6..b704aa7 100644
--- a/server/src/wled_controller/static/locales/en.json
+++ b/server/src/wled_controller/static/locales/en.json
@@ -160,6 +160,7 @@
   "device.metrics.frames_skipped": "Skipped",
   "device.metrics.keepalive": "Keepalive",
   "device.metrics.errors": "Errors",
+  "device.metrics.uptime": "Uptime",
   "device.metrics.timing": "Pipeline timing:",
   "device.metrics.device_fps": "Device refresh rate",
   "device.health.online": "Online",
diff --git a/server/src/wled_controller/static/locales/ru.json b/server/src/wled_controller/static/locales/ru.json
index 10bd15c..12b44c2 100644
--- a/server/src/wled_controller/static/locales/ru.json
+++ b/server/src/wled_controller/static/locales/ru.json
@@ -160,6 +160,7 @@
   "device.metrics.frames_skipped": "Пропущено",
   "device.metrics.keepalive": "Keepalive",
   "device.metrics.errors": "Ошибки",
+  "device.metrics.uptime": "Время работы",
   "device.metrics.timing": "Тайминг пайплайна:",
   "device.metrics.device_fps": "Частота обновления устройства",
   "device.health.online": "Онлайн",