diff --git a/frontend/src/components/strategyEvaluation/StrategyEvaluationChart.tsx b/frontend/src/components/strategyEvaluation/StrategyEvaluationChart.tsx
index 70d0a9f..7bc0a26 100644
--- a/frontend/src/components/strategyEvaluation/StrategyEvaluationChart.tsx
+++ b/frontend/src/components/strategyEvaluation/StrategyEvaluationChart.tsx
@@ -181,6 +181,8 @@ const StrategyEvaluationChart: React.FC<Props> = ({
   const [backtestRunning, setBacktestRunning] = useState(false);
   const [backtestError, setBacktestError] = useState<string | null>(null);
   const [magnifierActive, setMagnifierActive] = useState(false);
+  const [chartFullscreen, setChartFullscreen] = useState(false);
+  const chartRootRef = useRef<HTMLDivElement>(null);
   const marketBtnRef = useRef<HTMLButtonElement>(null);
   const managerRef = useRef<ChartManager | null>(null);
   const [internalOverlayVisibility, setInternalOverlayVisibility] = useState<ChartOverlayVisibility>(
@@ -680,8 +682,47 @@ const StrategyEvaluationChart: React.FC<Props> = ({
 
   const selectedBar = bars[selectedBarIndex] ?? null;
 
+  useEffect(() => {
+    const cls = 'seval-chart-fs-lock';
+    if (chartFullscreen) {
+      document.body.classList.add(cls);
+    } else {
+      document.body.classList.remove(cls);
+    }
+    return () => document.body.classList.remove(cls);
+  }, [chartFullscreen]);
+
+  useEffect(() => {
+    if (!chartFullscreen) return;
+    const onKey = (e: KeyboardEvent) => {
+      if (e.key !== 'Escape' || isKeyboardTypingTarget(e.target)) return;
+      setChartFullscreen(false);
+    };
+    document.addEventListener('keydown', onKey);
+    return () => document.removeEventListener('keydown', onKey);
+  }, [chartFullscreen]);
+
+  useEffect(() => {
+    const raf = requestAnimationFrame(() => {
+      requestAnimationFrame(() => {
+        const root = chartRootRef.current;
+        const mgr = managerRef.current;
+        if (!root || !mgr) return;
+        const wrap = root.querySelector('.tv-chart-wrap') as HTMLElement | null;
+        const w = root.clientWidth;
+        const h = wrap?.clientHeight ?? root.clientHeight;
+        if (w > 0 && h > 0) mgr.resize(w, h);
+        mgr.refreshPaneSeparatorOverlay();
+      });
+    });
+    return () => cancelAnimationFrame(raf);
+  }, [chartFullscreen, bars.length]);
+
   return (
-    <div className="seval-chart btd-analysis-chart">
+    <div
+      ref={chartRootRef}
+      className={`seval-chart btd-analysis-chart${chartFullscreen ? ' seval-chart--fullscreen' : ''}`}
+    >
       <div className="seval-chart-toolbar btd-analysis-toolbar">
         <div className="seval-chart-toolbar-run">
           <button
@@ -737,6 +778,31 @@ const StrategyEvaluationChart: React.FC<Props> = ({
           )}
         </div>
         <div className="seval-chart-toolbar-actions">
+          <button
+            type="button"
+            className={`btd-analysis-tool seval-chart-fullscreen-btn${chartFullscreen ? ' seval-chart-fullscreen-btn--active' : ''}`}
+            title={chartFullscreen ? '전체화면 종료 (Esc)' : '차트 전체화면 (캔들·보조지표)'}
+            aria-label={chartFullscreen ? '전체화면 종료' : '차트 전체화면'}
+            aria-pressed={chartFullscreen}
+            disabled={loading || bars.length === 0}
+            onClick={() => setChartFullscreen(v => !v)}
+          >
+            {chartFullscreen ? (
+              <svg width="14" height="14" viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden>
+                <polyline points="6,6 1,1" />
+                <polyline points="10,6 15,1" />
+                <polyline points="6,10 1,15" />
+                <polyline points="10,10 15,15" />
+              </svg>
+            ) : (
+              <svg width="14" height="14" viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden>
+                <polyline points="1,6 1,1 6,1" />
+                <polyline points="10,1 15,1 15,6" />
+                <polyline points="15,10 15,15 10,15" />
+                <polyline points="6,15 1,15 1,10" />
+              </svg>
+            )}
+          </button>
           {onOpenAiVerify && (
             <button
               type="button"
diff --git a/frontend/src/styles/strategyEvaluation.css b/frontend/src/styles/strategyEvaluation.css
index 8b710d4..81bf6dc 100644
--- a/frontend/src/styles/strategyEvaluation.css
+++ b/frontend/src/styles/strategyEvaluation.css
@@ -503,6 +503,45 @@
   flex-shrink: 0;
 }
 
+/* 차트 전체화면 — 캔들·보조지표 pane 전체 뷰포트 */
+.seval-chart--fullscreen {
+  position: fixed;
+  inset: 0;
+  z-index: 10050;
+  background: var(--se-bg, var(--bg, #131722));
+  min-height: 0;
+}
+
+.seval-chart--fullscreen .btd-analysis-main {
+  flex: 1;
+  min-height: 0;
+}
+
+.seval-chart--fullscreen .seval-chart-body {
+  flex: 1;
+  min-height: 0;
+}
+
+body.seval-chart-fs-lock {
+  overflow: hidden;
+}
+
+.seval-chart-fullscreen-btn {
+  width: 30px;
+  height: 30px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0;
+  border-radius: 6px;
+}
+
+.seval-chart-fullscreen-btn--active {
+  color: var(--se-accent, #3d9be9);
+  background: color-mix(in srgb, var(--se-accent, #3d9be9) 14%, transparent);
+  border-color: color-mix(in srgb, var(--se-accent, #3d9be9) 45%, var(--se-border, var(--border)));
+}
+
 .seval-chart-report-btn {
   width: 30px;
   height: 30px;