diff --git a/src/components/puck/blocks/grid.tsx b/src/components/puck/blocks/grid.tsx
index 4aae5d3..cea6faa 100644
--- a/src/components/puck/blocks/grid.tsx
+++ b/src/components/puck/blocks/grid.tsx
@@ -1,8 +1,13 @@
-import type { ComponentConfig, Slot } from "@puckeditor/core";
+"use client";
+
+import { createUsePuck, type ComponentConfig, Slot } from "@puckeditor/core";
 import { defineProps, responsive, field } from "@/lib/puck/define-props";
 import type { ResponsiveValue } from "@/lib/puck/responsive";
 import { columnCount, gap, gridRows, type ColumnCount, type Spacing, type GridRows } from "@/lib/puck/tokens";
-import { getGridClassName } from "@/lib/puck/layout";
+import { cn } from "@/lib/utils";
+import { getGridCapacity, getGridClassName } from "@/lib/puck/layout";
+
+const usePuck = createUsePuck();
 
 type GridProps = {
   content: Slot;
@@ -22,7 +27,11 @@ export const Grid: ComponentConfig<GridProps> = {
   label: "Grid",
   inline: true,
   ...props,
-  render: ({ content: Content, columns, rows: r, gap, puck }) => {
+  render: ({ content: Content, columns, rows: r, gap, puck, id }) => {
+    const viewportWidth = usePuck((state) => state.appState.ui.viewports.current.width);
+    const capacity = getGridCapacity(columns, r, viewportWidth);
+    const overflowClassName = `grid-overflow-${id}`;
+
     if (!Content) {
       return (
         <div
@@ -37,12 +46,21 @@ export const Grid: ComponentConfig<GridProps> = {
       );
     }
 
+    const className = cn(getGridClassName({ columns, rows: r, gap }), overflowClassName);
+    const overflowStyle = capacity !== null
+      ? `.${overflowClassName} > [data-puck-component]:nth-child(n + ${capacity + 1}) { display: none; }`
+      : null;
+
     return (
-      <Content
-        ref={puck.dragRef}
-        className={getGridClassName({ columns, rows: r, gap })}
-        minEmptyHeight="200px"
-      />
+      <div className="w-full">
+        {overflowStyle && <style>{overflowStyle}</style>}
+        <Content
+          ref={puck.dragRef}
+          className={className}
+          minEmptyHeight="200px"
+        />
+        {/* Hidden items are visually clamped via injected CSS when capacity is set. */}
+      </div>
     );
   },
 };
diff --git a/src/lib/puck/layout.test.ts b/src/lib/puck/layout.test.ts
index 8055d3c..d574a36 100644
--- a/src/lib/puck/layout.test.ts
+++ b/src/lib/puck/layout.test.ts
@@ -2,6 +2,7 @@ import { describe, expect, it } from "vitest";
 import {
   getContainerSlotClassName,
   getContainerSurfaceClassName,
+  getGridCapacity,
   getGridClassName,
   getMaxCols,
 } from "./layout";
@@ -45,4 +46,22 @@ describe("layout helpers", () => {
   it("returns the largest configured breakpoint column count", () => {
     expect(getMaxCols({ base: "1", md: "3", lg: "2" })).toBe(3);
   });
+
+  it("resolves grid capacity from the active responsive values", () => {
+    expect(
+      getGridCapacity(
+        { base: "1", md: "3" },
+        { base: "auto", md: "2" },
+        500,
+      ),
+    ).toBeNull();
+
+    expect(
+      getGridCapacity(
+        { base: "1", md: "3" },
+        { base: "auto", md: "2" },
+        1280,
+      ),
+    ).toBe(6);
+  });
 });
diff --git a/src/lib/puck/layout.ts b/src/lib/puck/layout.ts
index 462a2ef..37fd840 100644
--- a/src/lib/puck/layout.ts
+++ b/src/lib/puck/layout.ts
@@ -95,3 +95,46 @@ export function getGridClassName({
 export function getMaxCols(columns: ResponsiveValue<ColumnCount>): number {
   return Math.max(...Object.values(columns).map(Number));
 }
+
+const responsiveViewportWidths = {
+  md: 768,
+  lg: 1024,
+} as const;
+
+function resolveResponsiveValue<T>(
+  value: ResponsiveValue<T>,
+  viewportWidth: number | "100%",
+): T {
+  const orderedBreakpoints = viewportWidth === "100%"
+    ? ["lg", "md", "base"] as const
+    : viewportWidth >= responsiveViewportWidths.lg
+      ? ["lg", "md", "base"] as const
+      : viewportWidth >= responsiveViewportWidths.md
+        ? ["md", "base"] as const
+        : ["base"] as const;
+
+  for (const breakpoint of orderedBreakpoints) {
+    const breakpointValue = value[breakpoint];
+
+    if (breakpointValue !== undefined) {
+      return breakpointValue;
+    }
+  }
+
+  return value.base;
+}
+
+export function getGridCapacity(
+  columns: ResponsiveValue<ColumnCount>,
+  rows: ResponsiveValue<GridRows>,
+  viewportWidth: number | "100%",
+): number | null {
+  const resolvedRows = resolveResponsiveValue(rows, viewportWidth);
+
+  if (resolvedRows === "auto") {
+    return null;
+  }
+
+  const resolvedColumns = Number(resolveResponsiveValue(columns, viewportWidth));
+  return resolvedColumns * Number(resolvedRows);
+}