diff --git a/.changeset/standardize-small-controls.md b/.changeset/standardize-small-controls.md
new file mode 100644
index 0000000000..1ace199d25
--- /dev/null
+++ b/.changeset/standardize-small-controls.md
@@ -0,0 +1,5 @@
+---
+"@cloudflare/kumo": patch
+---
+
+Standardize small interactive controls at 30px high with the base text size, including medium corner radii for small toolbars, and restore `Toolbar size="sm"` as a supported API while keeping `xs` and `lg` deprecated.
diff --git a/packages/kumo-docs-astro/src/components/demos/ToolbarDemo.tsx b/packages/kumo-docs-astro/src/components/demos/ToolbarDemo.tsx
index d21fe4c28e..8d69fe6cff 100644
--- a/packages/kumo-docs-astro/src/components/demos/ToolbarDemo.tsx
+++ b/packages/kumo-docs-astro/src/components/demos/ToolbarDemo.tsx
@@ -23,11 +23,11 @@ export function ToolbarDemo() {
   );
 }
 
-/** @deprecated Toolbar size customization remains for compatibility. */
+/** Supported compact and default Toolbar sizes. */
 export function ToolbarSizesDemo() {
   return (
     <div className="grid gap-3">
-      {(["xs", "sm", "base", "lg"] as const).map((size) => (
+      {(["sm", "base"] as const).map((size) => (
         <div key={size} className="flex items-center gap-3">
           <span className="w-10 text-sm text-kumo-subtle">{size}</span>
           <Toolbar size={size} className="w-fit">
diff --git a/packages/kumo-docs-astro/src/pages/components/toolbar.mdx b/packages/kumo-docs-astro/src/pages/components/toolbar.mdx
index 60ebe6e3b4..63c6e1dd55 100644
--- a/packages/kumo-docs-astro/src/pages/components/toolbar.mdx
+++ b/packages/kumo-docs-astro/src/pages/components/toolbar.mdx
@@ -78,7 +78,7 @@ export default function Example() {
 Toolbar item components intentionally own grouped control presentation:
 
 - Every `Toolbar.*` control uses the `base` size by default.
-- The Toolbar `size` prop remains available for compatibility but is deprecated; omit it for the base size.
+- Set `size="sm"` for a compact 30px-high toolbar with medium corner radii.
 - `Toolbar.Button` always renders with quiet toolbar button styling.
 - `Toolbar.InputGroup` passes props directly to `InputGroup` with the resolved toolbar size.
 - Give Select `render={<Toolbar.Button />}` to compose its trigger into the toolbar.
@@ -133,11 +133,11 @@ inline addon or suffix.
   <ToolbarInputGroupDemo client:visible />
 </ComponentExample>
 
-### Deprecated sizing
+### Sizing
 
-The `size` prop still supports `xs`, `sm`, `base`, and `lg` for compatibility,
-but it is deprecated and will be removed in a future major release. Omit it to
-use the default `base` size.
+Use `size="sm"` for compact toolbars or omit `size` to use the default `base`
+size. The legacy `xs` and `lg` values are deprecated and remain available only
+for backwards compatibility.
 
 <ComponentExample demo="ToolbarSizesDemo">
   <ToolbarSizesDemo client:visible />
@@ -187,10 +187,10 @@ options instead.
       <td>Toolbar controls rendered as one grouped card.</td>
     </tr>
     <tr>
-      <td><code>size</code> <strong>Deprecated</strong></td>
+      <td><code>size</code></td>
       <td><code>&quot;xs&quot; | &quot;sm&quot; | &quot;base&quot; | &quot;lg&quot;</code></td>
       <td><code>&quot;base&quot;</code></td>
-      <td>Sets every supported item size. Omit this deprecated prop to use the default base size.</td>
+      <td>Sets every supported item size. Use <code>&quot;sm&quot;</code> for compact toolbars; <code>&quot;xs&quot;</code> and <code>&quot;lg&quot;</code> are deprecated compatibility values.</td>
     </tr>
     <tr>
       <td><code>className</code></td>
diff --git a/packages/kumo-figma/src/generators/button.ts b/packages/kumo-figma/src/generators/button.ts
index 98a259d1a3..d7e8f9387c 100644
--- a/packages/kumo-figma/src/generators/button.ts
+++ b/packages/kumo-figma/src/generators/button.ts
@@ -168,7 +168,7 @@ export function getButtonParsedShapeStyles(shape: string) {
  *
  * Source: button.tsx KUMO_BUTTON_VARIANTS.compactSize
  * - xs: size-3.5 = 14px
- * - sm: size-6.5 = 26px
+ * - sm: size-7.5 = 30px
  * - base: size-9 = 36px
  * - lg: size-10 = 40px
  *
@@ -179,7 +179,7 @@ export function getCompactSizeMap(): Record<string, number> {
   // Compact size classes from KUMO_BUTTON_VARIANTS.compactSize in button.tsx
   const compactSizeClasses: Record<string, string> = {
     xs: "size-3.5",
-    sm: "size-6.5",
+    sm: "size-7.5",
     base: "size-9",
     lg: "size-10",
   };
diff --git a/packages/kumo-figma/src/generators/drift-detection.test.ts b/packages/kumo-figma/src/generators/drift-detection.test.ts
index 4875e5fcf7..49a9f908d5 100644
--- a/packages/kumo-figma/src/generators/drift-detection.test.ts
+++ b/packages/kumo-figma/src/generators/drift-detection.test.ts
@@ -404,7 +404,7 @@ describe("Figma Plugin - Registry Sync Validation", () => {
     // Expected compact sizes from Button COMPACT_SIZE_MAP (derived from registry)
     const expectedSizes: Record<string, number> = {
       xs: 14, // size-3.5 = 3.5 * 4 = 14px
-      sm: 26, // size-6.5 = 6.5 * 4 = 26px
+      sm: 30, // size-7.5 = 7.5 * 4 = 30px
       base: 36, // size-9 = 9 * 4 = 36px
       lg: 40, // size-10 = 10 * 4 = 40px
     };
@@ -817,7 +817,7 @@ describe("Figma Plugin - Phase 6 Magic Number Enforcement", () => {
           content,
         );
 
-      // Check for explicit hardcoded COMPACT_SIZE_MAP definition: { xs: 14, sm: 26, base: 36, lg: 40 }
+      // Check for explicit hardcoded COMPACT_SIZE_MAP definition: { xs: 14, sm: 30, base: 36, lg: 40 }
       // This is the most drift-prone pattern - explicit recreation of button compact sizes
       const hasHardcodedCompactMap =
         /(?:const|let|var)\s+COMPACT_SIZE_MAP[^=]*=\s*\{[^}]*xs:\s*14[^}]*sm:\s*26/.test(
@@ -841,7 +841,7 @@ describe("Figma Plugin - Phase 6 Magic Number Enforcement", () => {
           `     - const COMPACT_SIZE_MAP = FALLBACK_VALUES.buttonCompactSize;\n` +
           `  Or reference values directly:\n` +
           `     - FALLBACK_VALUES.buttonCompactSize.xs  (14px)\n` +
-          `     - FALLBACK_VALUES.buttonCompactSize.sm  (26px)\n` +
+          `     - FALLBACK_VALUES.buttonCompactSize.sm  (30px)\n` +
           `     - FALLBACK_VALUES.buttonCompactSize.base (36px)\n` +
           `     - FALLBACK_VALUES.buttonCompactSize.lg  (40px)\n`,
       );
@@ -1223,7 +1223,7 @@ describe("Figma Plugin - CSS Theme Sync Validation", () => {
 
     // Verify expected values
     expect(themeData.kumo.buttonCompactSize.xs).toBe(14); // size-3.5 = 14px
-    expect(themeData.kumo.buttonCompactSize.sm).toBe(26); // size-6.5 = 26px
+    expect(themeData.kumo.buttonCompactSize.sm).toBe(30); // size-7.5 = 30px
     expect(themeData.kumo.buttonCompactSize.base).toBe(36); // size-9 = 36px
     expect(themeData.kumo.buttonCompactSize.lg).toBe(40); // size-10 = 40px
   });
diff --git a/packages/kumo-figma/src/generators/input.ts b/packages/kumo-figma/src/generators/input.ts
index 7313dcb418..198632c39c 100644
--- a/packages/kumo-figma/src/generators/input.ts
+++ b/packages/kumo-figma/src/generators/input.ts
@@ -85,7 +85,7 @@ function getSizeConfigFromRegistry(size: string) {
     { height: number; paddingX: number; fontSize: number; borderRadius: number }
   > = {
     xs: { height: 20, paddingX: 6, fontSize: 12, borderRadius: 2 },
-    sm: { height: 26, paddingX: 8, fontSize: 12, borderRadius: 6 },
+    sm: { height: 30, paddingX: 8, fontSize: 14, borderRadius: 6 },
     base: { height: 36, paddingX: 12, fontSize: 16, borderRadius: 8 },
     lg: { height: 40, paddingX: 16, fontSize: 16, borderRadius: 8 },
   };
diff --git a/packages/kumo-figma/src/generators/refresh-button.test.ts b/packages/kumo-figma/src/generators/refresh-button.test.ts
index 836d55e7e9..e3f28e40b6 100644
--- a/packages/kumo-figma/src/generators/refresh-button.test.ts
+++ b/packages/kumo-figma/src/generators/refresh-button.test.ts
@@ -176,15 +176,12 @@ describe("RefreshButton Generator - Icon Size Configuration", () => {
       lg: 20,
     };
 
-    const COMPACT_SIZE_MAP: Record<string, number> = {
-      xs: 14,
-      sm: 26,
-      base: 36,
-      lg: 40,
-    };
+    const COMPACT_SIZE_MAP = FALLBACK_VALUES.buttonCompactSize;
 
     for (const size of sizeProp.values) {
-      expect(REFRESH_ICON_SIZE[size]).toBeLessThan(COMPACT_SIZE_MAP[size]);
+      expect(REFRESH_ICON_SIZE[size]).toBeLessThan(
+        COMPACT_SIZE_MAP[size as keyof typeof COMPACT_SIZE_MAP],
+      );
     }
   });
 
@@ -318,12 +315,7 @@ describe("RefreshButton Generator - Complete Variant Data", () => {
   });
 
   it("should have all required configuration maps", () => {
-    const COMPACT_SIZE_MAP: Record<string, number> = {
-      xs: 14,
-      sm: 26,
-      base: 36,
-      lg: 40,
-    };
+    const COMPACT_SIZE_MAP = FALLBACK_VALUES.buttonCompactSize;
 
     const REFRESH_ICON_SIZE: Record<string, number> = {
       xs: 12,
@@ -337,7 +329,9 @@ describe("RefreshButton Generator - Complete Variant Data", () => {
 
     // Verify all size values have mappings
     for (const size of sizeProp.values) {
-      expect(COMPACT_SIZE_MAP[size]).toBeDefined();
+      expect(
+        COMPACT_SIZE_MAP[size as keyof typeof COMPACT_SIZE_MAP],
+      ).toBeDefined();
       expect(REFRESH_ICON_SIZE[size]).toBeDefined();
     }
   });
diff --git a/packages/kumo-figma/src/generators/sensitive-input.ts b/packages/kumo-figma/src/generators/sensitive-input.ts
index 568e0a16f6..fa782a0a00 100644
--- a/packages/kumo-figma/src/generators/sensitive-input.ts
+++ b/packages/kumo-figma/src/generators/sensitive-input.ts
@@ -127,9 +127,9 @@ function getSizeConfigFromRegistry(size: string): {
       borderRadius: BORDER_RADIUS.xs,
     },
     sm: {
-      height: 26,
+      height: 30,
       paddingX: 8,
-      fontSize: 12,
+      fontSize: 14,
       borderRadius: BORDER_RADIUS.md,
     },
     base: {
diff --git a/packages/kumo-figma/src/generators/shared.ts b/packages/kumo-figma/src/generators/shared.ts
index 29c0cf52da..0d1be0b5ea 100644
--- a/packages/kumo-figma/src/generators/shared.ts
+++ b/packages/kumo-figma/src/generators/shared.ts
@@ -437,7 +437,7 @@ export const FALLBACK_VALUES = {
   buttonCompactSize: {
     /** Extra small compact button (size-3.5) */
     xs: themeData.computed.buttonCompactSize.xs,
-    /** Small compact button (size-6.5) */
+    /** Small compact button (size-7.5) */
     sm: themeData.computed.buttonCompactSize.sm,
     /** Base compact button (size-9) */
     base: themeData.computed.buttonCompactSize.base,
diff --git a/packages/kumo-figma/src/parsers/tailwind-to-figma.ts b/packages/kumo-figma/src/parsers/tailwind-to-figma.ts
index 42d713ed34..70d5f048a1 100644
--- a/packages/kumo-figma/src/parsers/tailwind-to-figma.ts
+++ b/packages/kumo-figma/src/parsers/tailwind-to-figma.ts
@@ -255,7 +255,7 @@ export function parseTailwindClasses(classes: string): ParsedStyles {
       continue;
     }
 
-    // Height: h-5, h-6.5, h-9, h-10
+    // Height: h-5, h-7.5, h-9, h-10
     const heightMatch = cls.match(/^h-(\d+\.?\d*)$/);
     if (heightMatch) {
       result.height = getOrDefault(
@@ -266,7 +266,7 @@ export function parseTailwindClasses(classes: string): ParsedStyles {
       continue;
     }
 
-    // Size (width and height): size-3.5, size-6.5, size-9, size-10
+    // Size (width and height): size-3.5, size-7.5, size-9, size-10
     const sizeMatch = cls.match(/^size-(\d+\.?\d*)$/);
     if (sizeMatch) {
       const size = getOrDefault(
diff --git a/packages/kumo/scripts/component-registry/metadata.ts b/packages/kumo/scripts/component-registry/metadata.ts
index c78928eb92..38af7b2fab 100644
--- a/packages/kumo/scripts/component-registry/metadata.ts
+++ b/packages/kumo/scripts/component-registry/metadata.ts
@@ -630,21 +630,21 @@ export const COMPONENT_STYLING_METADATA: Record<string, ComponentStyling> = {
       base: "bg-kumo-control text-kumo-default ring ring-kumo-line",
       sizes: {
         xs: "h-5 gap-1 rounded-sm px-1.5 text-xs",
-        sm: "h-6.5 gap-1 rounded-md px-2 text-xs",
+        sm: "h-7.5 gap-1 rounded-md px-2 text-base",
         base: "h-9 gap-1.5 rounded-lg px-3 text-base",
         lg: "h-10 gap-2 rounded-lg px-4 text-base",
       },
     },
     sizeVariants: {
       sm: {
-        height: 26,
-        classes: "text-xs",
+        height: 30,
+        classes: "text-base",
         buttonSize: "sm",
         dimensions: {
           paddingX: 8,
           gap: 1,
           borderRadius: 6,
-          fontSize: 12,
+          fontSize: 14,
         },
       },
       base: {
@@ -722,11 +722,11 @@ export const COMPONENT_STYLING_METADATA: Record<string, ComponentStyling> = {
         },
       },
       sm: {
-        height: 26,
-        classes: "h-6.5 gap-1 rounded-md px-2 text-xs",
+        height: 30,
+        classes: "h-7.5 gap-1 rounded-md px-2 text-base",
         dimensions: {
           paddingX: 8,
-          fontSize: 12,
+          fontSize: 14,
           borderRadius: 6,
         },
       },
diff --git a/packages/kumo/src/components/autocomplete/autocomplete.tsx b/packages/kumo/src/components/autocomplete/autocomplete.tsx
index c93facbe66..c69dec2550 100644
--- a/packages/kumo/src/components/autocomplete/autocomplete.tsx
+++ b/packages/kumo/src/components/autocomplete/autocomplete.tsx
@@ -26,7 +26,7 @@ export interface KumoAutocompleteVariantsProps {
   /**
    * Size of the autocomplete input. Matches Input component sizes.
    * - `"xs"` — Extra small for compact UIs (h-5 / 20px)
-   * - `"sm"` — Small for secondary fields (h-6.5 / 26px)
+   * - `"sm"` — Small for secondary fields (h-7.5 / 30px)
    * - `"base"` — Default size (h-9 / 36px)
    * - `"lg"` — Large for prominent fields (h-10 / 40px)
    * @default "base"
diff --git a/packages/kumo/src/components/banner/banner.test.tsx b/packages/kumo/src/components/banner/banner.test.tsx
index 0faa017a28..30ec66d9b7 100644
--- a/packages/kumo/src/components/banner/banner.test.tsx
+++ b/packages/kumo/src/components/banner/banner.test.tsx
@@ -112,7 +112,7 @@ describe("Banner", () => {
     );
 
     const cta = screen.getByTestId("cta");
-    expect(cta.className).toContain("h-6.5");
+    expect(cta.className).toContain("h-7.5");
     expect(cta.className).toContain("px-2");
     expect(cta.getAttribute("aria-label")).toBe("Dismiss");
     expect(screen.getByTestId("icon")).toBeTruthy();
@@ -128,9 +128,9 @@ describe("Banner", () => {
     );
 
     const cta = screen.getByTestId("cta");
-    expect(cta.className).toContain("h-6.5");
+    expect(cta.className).toContain("h-7.5");
     expect(cta.className).toContain("px-2");
-    expect(cta.className).toContain("text-xs");
+    expect(cta.className).toContain("text-base");
   });
 
   it("applies compact spacing for the sm banner size", () => {
@@ -157,7 +157,7 @@ describe("Banner", () => {
     );
 
     const cta = screen.getByTestId("cta");
-    // Inherits the banner's size => xs (h-5), not the standalone sm default (h-6.5).
+    // Inherits the banner's size => xs (h-5), not the standalone sm default (h-7.5).
     expect(cta.className).toContain("h-5");
     expect(cta.className).toContain("px-1.5");
   });
diff --git a/packages/kumo/src/components/button/button.test.tsx b/packages/kumo/src/components/button/button.test.tsx
index ed2cf490df..d791ad3e29 100644
--- a/packages/kumo/src/components/button/button.test.tsx
+++ b/packages/kumo/src/components/button/button.test.tsx
@@ -66,6 +66,15 @@ describe("Button", () => {
     expect(button.classList.contains("select-text")).toBe(false);
   });
 
+  it("uses the standardized small control size", () => {
+    const classes = buttonVariants({ size: "sm" });
+    const compactClasses = buttonVariants({ size: "sm", shape: "square" });
+
+    expect(classes).toContain("h-7.5");
+    expect(classes).toContain("text-base");
+    expect(compactClasses).toContain("size-7.5");
+  });
+
   it("forwards ref to the <button> DOM node", () => {
     const ref = React.createRef<HTMLButtonElement>();
     render(<Button ref={ref}>Click</Button>);
diff --git a/packages/kumo/src/components/button/button.tsx b/packages/kumo/src/components/button/button.tsx
index a8e50b53d0..18b26e5768 100644
--- a/packages/kumo/src/components/button/button.tsx
+++ b/packages/kumo/src/components/button/button.tsx
@@ -28,7 +28,7 @@ export const KUMO_BUTTON_VARIANTS = {
       description: "Extra small button for compact UIs",
     },
     sm: {
-      classes: "h-6.5 gap-1 rounded-md px-2 text-xs",
+      classes: "h-7.5 gap-1 rounded-md px-2 text-base",
       description: "Small button for secondary actions",
     },
     base: {
@@ -42,7 +42,7 @@ export const KUMO_BUTTON_VARIANTS = {
   },
   compactSize: {
     xs: { classes: "size-3.5" },
-    sm: { classes: "size-6.5" },
+    sm: { classes: "size-7.5" },
     base: { classes: "size-9" },
     lg: { classes: "size-10" },
   },
diff --git a/packages/kumo/src/components/clipboard-text/clipboard-text.test.tsx b/packages/kumo/src/components/clipboard-text/clipboard-text.test.tsx
index 7ba08e8c2d..c8a0e0f3b4 100644
--- a/packages/kumo/src/components/clipboard-text/clipboard-text.test.tsx
+++ b/packages/kumo/src/components/clipboard-text/clipboard-text.test.tsx
@@ -46,6 +46,14 @@ describe("ClipboardText", () => {
     ).toBeTruthy();
   });
 
+  it("uses the standardized small control size", () => {
+    render(<ClipboardText text="sk_live_abc123" size="sm" />);
+    const clipboardText = screen.getByText("sk_live_abc123").parentElement;
+
+    expect(clipboardText?.className).toContain("h-7.5");
+    expect(clipboardText?.className).toContain("text-base");
+  });
+
   it("copies text and announces copied state without tooltip", async () => {
     render(<ClipboardText text="token-value" />);
 
diff --git a/packages/kumo/src/components/clipboard-text/clipboard-text.tsx b/packages/kumo/src/components/clipboard-text/clipboard-text.tsx
index 1ca98539c2..59e496fdb2 100644
--- a/packages/kumo/src/components/clipboard-text/clipboard-text.tsx
+++ b/packages/kumo/src/components/clipboard-text/clipboard-text.tsx
@@ -16,7 +16,7 @@ const COPIED_FEEDBACK_MS = 1500;
 export const KUMO_CLIPBOARD_TEXT_VARIANTS = {
   size: {
     sm: {
-      classes: "text-xs",
+      classes: "text-base",
       buttonSize: "sm" as const,
       description: "Small clipboard text for compact UIs",
     },
diff --git a/packages/kumo/src/components/combobox/combobox.tsx b/packages/kumo/src/components/combobox/combobox.tsx
index 2a46ebdaa9..04c023885d 100644
--- a/packages/kumo/src/components/combobox/combobox.tsx
+++ b/packages/kumo/src/components/combobox/combobox.tsx
@@ -55,7 +55,7 @@ export interface KumoComboboxVariantsProps {
   /**
    * Size of the combobox trigger. Matches Input component sizes.
    * - `"xs"` — Extra small for compact UIs (h-5 / 20px)
-   * - `"sm"` — Small for secondary fields (h-6.5 / 26px)
+   * - `"sm"` — Small for secondary fields (h-7.5 / 30px)
    * - `"base"` — Default size (h-9 / 36px)
    * - `"lg"` — Large for prominent fields (h-10 / 40px)
    * @default "base"
@@ -544,7 +544,7 @@ function Chip({
 // Map size to min-height class for TriggerMultipleWithInput
 const sizeToMinHeight: Record<KumoComboboxSize, string> = {
   xs: "min-h-5",
-  sm: "min-h-6.5",
+  sm: "min-h-7.5",
   base: "min-h-9",
   lg: "min-h-10",
 };
diff --git a/packages/kumo/src/components/input-group/context.ts b/packages/kumo/src/components/input-group/context.ts
index 8612854f71..4de259f1d7 100644
--- a/packages/kumo/src/components/input-group/context.ts
+++ b/packages/kumo/src/components/input-group/context.ts
@@ -67,7 +67,7 @@ export const INPUT_GROUP_SIZE: Record<KumoInputSize, InputGroupSizeTokens> = {
     addonButtonOuterStart: "pl-1",
     addonButtonOuterEnd: "pr-1",
     suffixPad: "pr-2",
-    fontSize: "text-xs",
+    fontSize: "text-base",
     iconSize: 13,
   },
   base: {
diff --git a/packages/kumo/src/components/input-group/input-group.test.tsx b/packages/kumo/src/components/input-group/input-group.test.tsx
index c40aa4f16f..702390cc33 100644
--- a/packages/kumo/src/components/input-group/input-group.test.tsx
+++ b/packages/kumo/src/components/input-group/input-group.test.tsx
@@ -3,7 +3,7 @@ import type { Icon, IconProps } from "@phosphor-icons/react";
 import { describe, expect, it, vi } from "vite-plus/test";
 import { fireEvent, render, screen, within } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
-import { InputGroup } from "./input-group";
+import { InputGroup, KUMO_INPUT_GROUP_VARIANTS } from "./input-group";
 import { INPUT_GROUP_SIZE, detectFocusMode } from "./context";
 import type { KumoInputSize } from "../input/input";
 
@@ -322,6 +322,12 @@ describe("InputGroup", () => {
   });
 
   describe("size variants", () => {
+    it("uses the standardized small control size", () => {
+      expect(KUMO_INPUT_GROUP_VARIANTS.size.sm.classes).toContain("h-7.5");
+      expect(KUMO_INPUT_GROUP_VARIANTS.size.sm.classes).toContain("text-base");
+      expect(INPUT_GROUP_SIZE.sm.fontSize).toBe("text-base");
+    });
+
     it("applies size to input", () => {
       const { rerender } = render(
         <InputGroup size="sm" label="Small">
diff --git a/packages/kumo/src/components/input-group/input-group.tsx b/packages/kumo/src/components/input-group/input-group.tsx
index 8471897c2d..cee462bad5 100644
--- a/packages/kumo/src/components/input-group/input-group.tsx
+++ b/packages/kumo/src/components/input-group/input-group.tsx
@@ -33,7 +33,7 @@ export const KUMO_INPUT_GROUP_VARIANTS = {
       description: "Extra small size.",
     },
     sm: {
-      classes: "h-7 text-xs",
+      classes: "h-7.5 text-base",
       description: "Small size.",
     },
     base: {
diff --git a/packages/kumo/src/components/input/input.test.tsx b/packages/kumo/src/components/input/input.test.tsx
index 0662b6cd5d..6383cba4db 100644
--- a/packages/kumo/src/components/input/input.test.tsx
+++ b/packages/kumo/src/components/input/input.test.tsx
@@ -69,7 +69,10 @@ describe("Input", () => {
 
   it("renders with size 'sm'", () => {
     render(<Input aria-label="Test" size="sm" />);
-    expect(screen.getByRole("textbox").className).toContain("h-6.5");
+    const input = screen.getByRole("textbox");
+
+    expect(input.className).toContain("h-7.5");
+    expect(input.className).toContain("text-base");
   });
 
   it("renders with size 'lg'", () => {
diff --git a/packages/kumo/src/components/input/input.tsx b/packages/kumo/src/components/input/input.tsx
index 9d4cf52acf..627473320d 100644
--- a/packages/kumo/src/components/input/input.tsx
+++ b/packages/kumo/src/components/input/input.tsx
@@ -20,7 +20,7 @@ export const KUMO_INPUT_VARIANTS = {
       description: "Extra small input for compact UIs",
     },
     sm: {
-      classes: "h-6.5 gap-1 rounded-md px-2 text-xs",
+      classes: "h-7.5 gap-1 rounded-md px-2 text-base",
       description: "Small input for secondary fields",
     },
     base: {
@@ -52,7 +52,7 @@ export const KUMO_INPUT_DEFAULT_VARIANTS = {
 export const KUMO_INPUT_STYLING = {
   dimensions: {
     xs: { height: 20, paddingX: 6, fontSize: 12, borderRadius: 2, width: 160 },
-    sm: { height: 26, paddingX: 8, fontSize: 12, borderRadius: 6, width: 200 },
+    sm: { height: 30, paddingX: 8, fontSize: 14, borderRadius: 6, width: 200 },
     base: {
       height: 36,
       paddingX: 12,
diff --git a/packages/kumo/src/components/select/select.tsx b/packages/kumo/src/components/select/select.tsx
index 1291cb7fc7..b8d165dc42 100644
--- a/packages/kumo/src/components/select/select.tsx
+++ b/packages/kumo/src/components/select/select.tsx
@@ -67,7 +67,7 @@ export interface KumoSelectVariantsProps {
   /**
    * Size of the select trigger. Matches Input component sizes.
    * - `"xs"` — Extra small for compact UIs (h-5 / 20px)
-   * - `"sm"` — Small for secondary fields (h-6.5 / 26px)
+   * - `"sm"` — Small for secondary fields (h-7.5 / 30px)
    * - `"base"` — Default size (h-9 / 36px)
    * - `"lg"` — Large for prominent fields (h-10 / 40px)
    * @default "base"
diff --git a/packages/kumo/src/components/tabs/tabs.test.tsx b/packages/kumo/src/components/tabs/tabs.test.tsx
index 27f72c5326..1490a3976d 100644
--- a/packages/kumo/src/components/tabs/tabs.test.tsx
+++ b/packages/kumo/src/components/tabs/tabs.test.tsx
@@ -19,6 +19,15 @@ const extraTabs = [
 ];
 
 describe("Tabs", () => {
+  it("uses the standardized small control size", () => {
+    render(<Tabs size="sm" selectedValue="overview" tabs={baseTabs} />);
+
+    expect(screen.getByRole("tablist").className).toContain("h-7.5");
+    expect(screen.getByRole("tab", { name: "Overview" }).className).toContain(
+      "text-base",
+    );
+  });
+
   it("forwards nativeButton=false for link-rendered tabs", () => {
     const warnSpy = vi.spyOn(console, "warn").mockImplementation(() => {});
 
diff --git a/packages/kumo/src/components/tabs/tabs.tsx b/packages/kumo/src/components/tabs/tabs.tsx
index f76480d7eb..04560f301a 100644
--- a/packages/kumo/src/components/tabs/tabs.tsx
+++ b/packages/kumo/src/components/tabs/tabs.tsx
@@ -71,7 +71,7 @@ export interface KumoTabsVariantsProps {
   /**
    * Tab size.
    * - `"base"` — Default size (h-9, text-base)
-   * - `"sm"` — Compact size (h-6.5, text-xs) — matches Input size="sm"
+   * - `"sm"` — Compact size (h-7.5, text-base) — matches Input size="sm"
    * @default "base"
    */
   size?: (typeof KUMO_TABS_VARIANTS.size)[number];
@@ -208,7 +208,7 @@ export function Tabs({
         <div
           className={cn(
             "absolute inset-x-0 top-1/2 z-0 -translate-y-1/2 rounded-lg bg-kumo-recessed",
-            isSm ? "h-6.5" : "h-9",
+            isSm ? "h-7.5" : "h-9",
           )}
         />
       )}
@@ -222,10 +222,9 @@ export function Tabs({
         className={cn(
           "kumo-tabs-list relative flex min-w-0 shrink scroll-px-(--scroll-fade-width) items-stretch overflow-x-auto overflow-y-hidden [--scroll-fade-width:3rem]",
           isSegmented && "rounded-lg bg-kumo-recessed px-0.5",
-          isSegmented && (isSm ? "h-6.5 rounded-md" : "h-9"),
+          isSegmented && (isSm ? "h-7.5 rounded-md" : "h-9"),
           isOverflowing && "cursor-grab active:cursor-grabbing",
-          isUnderline && "gap-4 border-b border-kumo-hairline pb-2",
-          isUnderline && (isSm ? "h-6.5" : "h-7.5"),
+          isUnderline && "h-7.5 gap-4 border-b border-kumo-hairline pb-2",
           listClassName,
         )}
       >
@@ -245,11 +244,10 @@ export function Tabs({
               });
             }}
             className={cn(
-              "relative z-2 flex items-center rounded bg-transparent whitespace-nowrap focus:ring-kumo-focus/50 focus:outline-none focus-visible:ring-2 focus-visible:ring-kumo-brand",
+              "relative z-2 flex items-center rounded bg-transparent text-base whitespace-nowrap focus:ring-kumo-focus/50 focus:outline-none focus-visible:ring-2 focus-visible:ring-kumo-brand",
               isOverflowing
                 ? "cursor-grab active:cursor-grabbing"
                 : "cursor-pointer",
-              isSm ? "text-xs" : "text-base",
               isSegmented &&
                 "my-0.5 text-kumo-subtle hover:text-kumo-default focus-visible:ring-inset aria-selected:text-kumo-default",
               isSegmented && (isSm ? "rounded-sm px-2" : "rounded-md px-2.5"),
diff --git a/packages/kumo/src/components/toolbar/toolbar.tsx b/packages/kumo/src/components/toolbar/toolbar.tsx
index 64fe651a57..c24645c6f6 100644
--- a/packages/kumo/src/components/toolbar/toolbar.tsx
+++ b/packages/kumo/src/components/toolbar/toolbar.tsx
@@ -11,42 +11,49 @@ import { Button as KumoButton, type ButtonProps } from "../button/button";
 import { Input as KumoInput, type InputProps } from "../input/input";
 import { InputGroup } from "../input-group/input-group";
 
-/** @deprecated Toolbar size customization is deprecated. Omit `size` to use the default base size. */
+/** Toolbar size variant definitions. */
 export const KUMO_TOOLBAR_VARIANTS = {
   size: {
+    /** @deprecated Use `"sm"` for compact toolbars. */
     xs: {
       classes: "text-xs",
-      description: "Extra small toolbar for compact UIs",
+      description: "Deprecated extra small toolbar size",
     },
     sm: {
-      classes: "text-xs",
+      classes: "rounded-md text-base",
       description: "Small toolbar for secondary controls",
     },
     base: {
       classes: "text-base",
       description: "Default toolbar size",
     },
+    /** @deprecated Use `"base"` for the default toolbar size. */
     lg: {
       classes: "text-base",
-      description: "Large toolbar for prominent controls",
+      description: "Deprecated large toolbar size",
     },
   },
 } as const;
 
-/** @deprecated Toolbar size customization is deprecated. Omit `size` to use the default base size. */
+/** Default Toolbar variants. */
 export const KUMO_TOOLBAR_DEFAULT_VARIANTS = {
   size: "base",
 } as const;
 
-/** @deprecated Toolbar size customization is deprecated. Omit `size` to use the default base size. */
+/**
+ * Toolbar size. `"sm"` and `"base"` are supported; `"xs"` and `"lg"` are
+ * deprecated compatibility values.
+ */
 export type ToolbarSize = keyof typeof KUMO_TOOLBAR_VARIANTS.size;
 
 export interface ToolbarProps extends Omit<ToolbarBase.Root.Props, "children"> {
   /** Toolbar controls rendered as one grouped card. */
   children: React.ReactNode;
   /**
-   * Locks every toolbar item to this size.
-   * @deprecated Omit this prop to use the default base size. Toolbar size customization will be removed in a future major release.
+   * Locks every toolbar item to this size. Use `"sm"` for compact toolbars or
+   * `"base"` for the default size. `"xs"` and `"lg"` are deprecated and
+   * remain available only for backwards compatibility.
+   * @default "base"
    */
   size?: ToolbarSize;
 }
@@ -105,7 +112,7 @@ const Root = React.forwardRef<HTMLDivElement, ToolbarProps>(
         data-kumo-component="Toolbar"
         className={cn(
           "inline-flex w-fit items-stretch rounded-lg bg-kumo-control shadow-xs ring ring-kumo-line",
-          "[&>*:first-child]:rounded-l-lg [&>*:not([aria-hidden='true']):not([type='hidden']):not(:has(~_:not([aria-hidden='true']):not([type='hidden'])))]:rounded-r-lg",
+          "[&>*:first-child]:rounded-l-[inherit] [&>*:not([aria-hidden='true']):not([type='hidden']):not(:has(~_:not([aria-hidden='true']):not([type='hidden'])))]:rounded-r-[inherit]",
           "[&>*_[data-kumo-toolbar-input]:focus]:rounded-[inherit]",
           "[&>*:not([aria-hidden='true']):not(:first-child)]:border-l [&>*:not([aria-hidden='true']):not(:first-child)]:border-kumo-line",
           KUMO_TOOLBAR_VARIANTS.size[size].classes,