diff --git a/src/renderer/components/modals/WordExportDialog.tsx b/src/renderer/components/modals/WordExportDialog.tsx
new file mode 100644
index 0000000..37c4f5f
--- /dev/null
+++ b/src/renderer/components/modals/WordExportDialog.tsx
@@ -0,0 +1,114 @@
+import { useState, useEffect } from 'react';
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Label } from '@/components/ui/label';
+import { RadioGroup, RadioGroupItem } from '@/components/ui/radio-group';
+import { useAppStore } from '@/stores/app-store';
+import { useSettingsStore } from '@/stores/settings-store';
+import { useExportSource } from '@/hooks/use-export-source';
+import { generateDocx } from '@/lib/docx-export';
+import { ipc } from '@/lib/ipc';
+import { toast } from '@/lib/toast';
+
+export function WordExportDialog({ sourcePath }: { sourcePath: string }) {
+  const closeModal = useAppStore((s) => s.closeModal);
+  const setSetting = useSettingsStore((s) => s.setSetting);
+  const docxCustomTemplatePath = useSettingsStore((s) => s.docxCustomTemplatePath);
+  const source = useExportSource();
+
+  const [templateMode, setTemplateMode] = useState<'standard' | 'custom'>(docxCustomTemplatePath ? 'custom' : 'standard');
+  const [submitting, setSubmitting] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    setTemplateMode(docxCustomTemplatePath ? 'custom' : 'standard');
+  }, [docxCustomTemplatePath]);
+
+  const handleChooseTemplate = async () => {
+    const result = await ipc.app.showSaveDialog?.({ title: 'Choose template path' });
+    if (result?.ok && result.data) {
+      setSetting('docxCustomTemplatePath', result.data);
+    }
+  };
+
+  const handleSubmit = async () => {
+    if (!source) { setError('No file open.'); return; }
+    setSubmitting(true);
+    setError(null);
+    try {
+      const blob = await generateDocx({
+        source: source.source,
+        title: source.title,
+        customTemplatePath: templateMode === 'custom' ? docxCustomTemplatePath : null,
+      });
+      const saveResult = await ipc.app.showSaveDialog?.({ title: 'Save as Word document', defaultPath: source.path.replace(/\.md$/, '.docx') });
+      if (!saveResult?.ok || !saveResult.data) {
+        setSubmitting(false);
+        return;
+      }
+      const buffer = new Uint8Array(await blob.arrayBuffer());
+      const writeResult = await ipc.file.writeBuffer({ path: saveResult.data, buffer });
+      if (!writeResult.ok) {
+        setError(writeResult.error.message);
+        setSubmitting(false);
+        return;
+      }
+      toast.success(`Exported ${source.title} to ${saveResult.data}`);
+      closeModal();
+    } catch (err) {
+      const msg = err instanceof Error ? err.message : String(err);
+      toast.error(`Export failed: ${msg}`);
+      setError(msg);
+      setSubmitting(false);
+    }
+  };
+
+  return (
+    <Dialog open onOpenChange={(o) => !o && closeModal()}>
+      <DialogContent aria-describedby="word-desc">
+        <DialogHeader>
+          <DialogTitle>Export to Word (.docx)</DialogTitle>
+          <DialogDescription id="word-desc">{sourcePath}</DialogDescription>
+        </DialogHeader>
+        <div className="space-y-3 text-sm">
+          <div>
+            <Label>Template</Label>
+            <RadioGroup value={templateMode} onValueChange={(v) => setTemplateMode(v as 'standard' | 'custom')}>
+              <div className="flex items-center gap-2">
+                <RadioGroupItem value="standard" id="template-standard" />
+                <Label htmlFor="template-standard">Standard (bundled)</Label>
+              </div>
+              <div className="flex items-center gap-2">
+                <RadioGroupItem value="custom" id="template-custom" />
+                <Label htmlFor="template-custom">Custom .dotx</Label>
+              </div>
+            </RadioGroup>
+          </div>
+          {templateMode === 'custom' && (
+            <div className="rounded border border-border bg-card/20 p-2 text-xs">
+              {docxCustomTemplatePath ? (
+                <span>Template path: <code>{docxCustomTemplatePath}</code></span>
+              ) : (
+                <span className="text-muted-foreground">No template selected. Click "Choose template..." to pick a .dotx file.</span>
+              )}
+              <Button variant="ghost" size="sm" onClick={handleChooseTemplate} className="ml-2">
+                Choose template...
+              </Button>
+            </div>
+          )}
+          {error && (
+            <div role="alert" className="rounded border border-destructive/40 bg-destructive/5 p-2 text-xs text-destructive">
+              {error}
+            </div>
+          )}
+        </div>
+        <DialogFooter>
+          <Button variant="ghost" onClick={closeModal} disabled={submitting}>Cancel</Button>
+          <Button onClick={handleSubmit} disabled={submitting}>
+            {submitting ? 'Exporting…' : 'Export'}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
diff --git a/src/renderer/lib/ipc.ts b/src/renderer/lib/ipc.ts
index 79b383c..af0db59 100644
--- a/src/renderer/lib/ipc.ts
+++ b/src/renderer/lib/ipc.ts
@@ -102,6 +102,8 @@ export const ipc = {
       safeCall('app', 'openExternal', url),
     showItemInFolder: (path: string): Promise<IpcResult<void | ChannelMissing>> =>
       safeCall('app', 'showItemInFolder', path),
+    showSaveDialog: (args?: { title?: string; defaultPath?: string }): Promise<IpcResult<string | null | ChannelMissing>> =>
+      safeCall('app', 'showSaveDialog', args),
   },
   menu: {
     /**
diff --git a/tests/component/modals/WordExportDialog.test.tsx b/tests/component/modals/WordExportDialog.test.tsx
new file mode 100644
index 0000000..6bdb254
--- /dev/null
+++ b/tests/component/modals/WordExportDialog.test.tsx
@@ -0,0 +1,72 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { WordExportDialog } from '@/components/modals/WordExportDialog';
+import { useFileStore } from '@/stores/file-store';
+import { useEditorStore } from '@/stores/editor-store';
+import { useSettingsStore } from '@/stores/settings-store';
+
+vi.mock('@/lib/docx-export', () => ({
+  generateDocx: vi.fn().mockResolvedValue(new Blob([new Uint8Array([1, 2, 3])], { type: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' })),
+}));
+
+vi.mock('@/lib/toast', () => ({
+  toast: {
+    success: vi.fn(),
+    error: vi.fn(),
+  },
+}));
+
+vi.mock('@/lib/ipc', () => ({
+  ipc: {
+    app: {
+      showSaveDialog: vi.fn(),
+    },
+    file: {
+      writeBuffer: vi.fn(),
+    },
+  },
+}));
+
+import { generateDocx } from '@/lib/docx-export';
+import { toast } from '@/lib/toast';
+import { ipc } from '@/lib/ipc';
+
+describe('WordExportDialog', () => {
+  beforeEach(() => {
+    localStorage.clear();
+    vi.clearAllMocks();
+    useSettingsStore.setState(useSettingsStore.getInitialState());
+    useFileStore.setState({ activeTabId: '/test.md', openTabs: [{ id: '/test.md', path: '/test.md', title: 'test.md', dirty: false }] } as any);
+    useEditorStore.setState({ buffers: new Map([['/test.md', { id: '/test.md', path: '/test.md', content: '# hi', dirty: false }]]) } as any);
+    (ipc.app.showSaveDialog as any).mockResolvedValue({ ok: true, data: '/out.docx' });
+    (ipc.file.writeBuffer as any).mockResolvedValue({ ok: true });
+  });
+
+  it('renders with template selector (standard / custom)', () => {
+    render(<WordExportDialog sourcePath="/test.md" />);
+    expect(screen.getByText(/export to word/i)).toBeInTheDocument();
+    expect(screen.getByText(/test\.md/)).toBeInTheDocument();
+  });
+
+  it('submitting calls generateDocx and writes the file', async () => {
+    render(<WordExportDialog sourcePath="/test.md" />);
+    await userEvent.click(screen.getByRole('button', { name: /^export$/i }));
+    expect(generateDocx).toHaveBeenCalledTimes(1);
+    expect(ipc.file.writeBuffer).toHaveBeenCalledTimes(1);
+    expect(toast.success).toHaveBeenCalledWith(expect.stringContaining('Exported test.md'));
+  });
+
+  it('shows error message on write failure', async () => {
+    (ipc.file.writeBuffer as any).mockResolvedValue({ ok: false, error: { code: 'E', message: 'write failed' } });
+    render(<WordExportDialog sourcePath="/test.md" />);
+    await userEvent.click(screen.getByRole('button', { name: /^export$/i }));
+    expect(await screen.findByText(/write failed/i)).toBeInTheDocument();
+  });
+
+  it('switches to custom template path when "Custom" is selected', async () => {
+    useSettingsStore.setState({ ...useSettingsStore.getInitialState(), docxCustomTemplatePath: '/my.dotx' });
+    render(<WordExportDialog sourcePath="/test.md" />);
+    expect(screen.getByText(/\/my\.dotx/)).toBeInTheDocument();
+  });
+});