diff --git a/src/renderer/components/modals/TableGeneratorDialog.tsx b/src/renderer/components/modals/TableGeneratorDialog.tsx
new file mode 100644
index 0000000..c992986
--- /dev/null
+++ b/src/renderer/components/modals/TableGeneratorDialog.tsx
@@ -0,0 +1,132 @@
+import { useState } from 'react';
+import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Checkbox } from '@/components/ui/checkbox';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { useAppStore } from '@/stores/app-store';
+import { toast } from '@/lib/toast';
+
+function pad(s: string, w: number) {
+  return s.padEnd(w);
+}
+
+function generateTable(rows: number, cols: number, hasHeader: boolean, headers: string[], data: string[][]): string {
+  const width = cols;
+  const colWidths: number[] = Array.from({ length: width }, (_, c) => {
+    const all = [headers[c] ?? '', ...data.map((r) => r[c] ?? '')];
+    return Math.max(...all.map((s) => s.length), 3);
+  });
+  const lines: string[] = [];
+  if (hasHeader) {
+    lines.push('| ' + Array.from({ length: width }, (_, c) => pad(headers[c] ?? `Col ${c + 1}`, colWidths[c])).join(' | ') + ' |');
+    lines.push('| ' + colWidths.map((w) => '-'.repeat(w)).join(' | ') + ' |');
+  }
+  for (const row of data) {
+    lines.push('| ' + Array.from({ length: width }, (_, c) => pad(row[c] ?? '', colWidths[c])).join(' | ') + ' |');
+  }
+  // Add empty rows if data has fewer
+  for (let i = data.length; i < rows; i++) {
+    lines.push('| ' + colWidths.map((w) => pad('', w)).join(' | ') + ' |');
+  }
+  return lines.join('\n');
+}
+
+export function TableGeneratorDialog() {
+  const closeModal = useAppStore((s) => s.closeModal);
+  const [rows, setRows] = useState(3);
+  const [cols, setCols] = useState(3);
+  const [hasHeader, setHasHeader] = useState(true);
+  const [headers, setHeaders] = useState<string[]>(['Col 1', 'Col 2', 'Col 3']);
+
+  const output = generateTable(rows, cols, hasHeader, headers, []);
+
+  const handleCopy = async () => {
+    try {
+      await navigator.clipboard.writeText(output);
+      toast.success('Copied to clipboard');
+    } catch {
+      toast.error('Failed to copy');
+    }
+  };
+
+  const updateHeadersCount = (newCols: number) => {
+    setCols(newCols);
+    setHeaders((prev) => {
+      if (prev.length < newCols) return [...prev, ...Array(newCols - prev.length).fill('').map((_, i) => `Col ${prev.length + i + 1}`)];
+      return prev.slice(0, newCols);
+    });
+  };
+
+  return (
+    <Dialog open onOpenChange={(o) => !o && closeModal()}>
+      <DialogContent aria-describedby="table-desc" className="max-w-2xl">
+        <DialogHeader>
+          <DialogTitle>Table generator</DialogTitle>
+          <DialogDescription id="table-desc">Specify rows × columns to generate a markdown table</DialogDescription>
+        </DialogHeader>
+        <div className="space-y-3">
+          <div className="flex gap-3">
+            <div className="flex-1">
+              <Label htmlFor="table-rows">Rows</Label>
+              <Input
+                id="table-rows"
+                aria-label="Rows"
+                type="number"
+                min={1}
+                max={50}
+                value={rows}
+                onChange={(e) => setRows(Math.max(1, Math.min(50, Number(e.target.value) || 1)))}
+              />
+            </div>
+            <div className="flex-1">
+              <Label htmlFor="table-cols">Columns</Label>
+              <Input
+                id="table-cols"
+                aria-label="Cols"
+                type="number"
+                min={1}
+                max={20}
+                value={cols}
+                onChange={(e) => updateHeadersCount(Math.max(1, Math.min(20, Number(e.target.value) || 1)))}
+              />
+            </div>
+          </div>
+          <label className="flex items-center gap-2">
+            <Checkbox checked={hasHeader} onCheckedChange={(c) => setHasHeader(!!c)} aria-label="Header" />
+            Include header row
+          </label>
+          {hasHeader && (
+            <div>
+              <Label>Header names</Label>
+              <div className="grid gap-2" style={{ gridTemplateColumns: `repeat(${cols}, minmax(0, 1fr))` }}>
+                {Array.from({ length: cols }, (_, i) => (
+                  <Input
+                    key={i}
+                    aria-label={`Header ${i + 1}`}
+                    value={headers[i] ?? ''}
+                    onChange={(e) => {
+                      const next = [...headers];
+                      next[i] = e.target.value;
+                      setHeaders(next);
+                    }}
+                  />
+                ))}
+              </div>
+            </div>
+          )}
+          <div>
+            <Label>Output</Label>
+            <pre className="overflow-auto rounded border border-border bg-card/30 p-3 text-xs" data-testid="table-output">
+              {output}
+            </pre>
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="ghost" onClick={closeModal}>Close</Button>
+          <Button onClick={handleCopy}>Copy</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
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diff --git a/tests/component/modals/TableGeneratorDialog.test.tsx b/tests/component/modals/TableGeneratorDialog.test.tsx
new file mode 100644
index 0000000..e1c2f1f
--- /dev/null
+++ b/tests/component/modals/TableGeneratorDialog.test.tsx
@@ -0,0 +1,36 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { TableGeneratorDialog } from '@/components/modals/TableGeneratorDialog';
+
+describe('TableGeneratorDialog', () => {
+  beforeEach(() => {
+    localStorage.clear();
+  });
+
+  it('renders with rows, cols, and header inputs', () => {
+    render(<TableGeneratorDialog />);
+    expect(screen.getByText(/table generator/i)).toBeInTheDocument();
+    expect(screen.getByRole('spinbutton', { name: /rows/i })).toBeInTheDocument();
+    expect(screen.getByRole('spinbutton', { name: /cols/i })).toBeInTheDocument();
+    expect(screen.getByRole('checkbox', { name: /header/i })).toBeInTheDocument();
+  });
+
+  it('generates a markdown table on rows/cols change', async () => {
+    render(<TableGeneratorDialog />);
+    const rowsInput = screen.getByRole('spinbutton', { name: /rows/i });
+    const colsInput = screen.getByRole('spinbutton', { name: /cols/i });
+    await userEvent.clear(rowsInput);
+    await userEvent.type(rowsInput, '2');
+    await userEvent.clear(colsInput);
+    await userEvent.type(colsInput, '3');
+    // Output should have header + separator + 2 rows = 4 lines for a 3-col table with header
+    const output = screen.getByTestId('table-output');
+    expect(output.textContent).toContain('|');
+  });
+
+  it('shows a copy button next to the output', () => {
+    render(<TableGeneratorDialog />);
+    expect(screen.getByRole('button', { name: /copy/i })).toBeInTheDocument();
+  });
+});
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