diff --git a/packages/block-editor/CHANGELOG.md b/packages/block-editor/CHANGELOG.md
index e2230b0c3ff1e..cc14eb7d86789 100644
--- a/packages/block-editor/CHANGELOG.md
+++ b/packages/block-editor/CHANGELOG.md
@@ -4,7 +4,8 @@
 
 ### Bug Fix
 
--   `FontSizePicker`: Update fluid utils so that only string, floats and integers are treated as valid font sizes for the purposes of fluid typography.([#44847](https://github.com/WordPress/gutenberg/pull/44847))
+-   `FontSizePicker`: Update fluid utils so that only string, floats and integers are treated as valid font sizes for the purposes of fluid typography ([#44847](https://github.com/WordPress/gutenberg/pull/44847))
+-   `getTypographyClassesAndStyles()`: Ensure that font sizes are transformed into fluid values if fluid typography is activated ([#44852](https://github.com/WordPress/gutenberg/pull/44852))
 
 ## 10.2.0 (2022-10-05)
 
diff --git a/packages/block-editor/README.md b/packages/block-editor/README.md
index d30f527997028..2ecacfd4b959e 100644
--- a/packages/block-editor/README.md
+++ b/packages/block-editor/README.md
@@ -521,6 +521,7 @@ attributes.
 _Parameters_
 
 -   _attributes_ `Object`: Block attributes.
+-   _isFluidFontSizeActive_ `boolean`: Whether the function should try to convert font sizes to fluid values.
 
 _Returns_
 
diff --git a/packages/block-editor/src/hooks/test/use-typography-props.js b/packages/block-editor/src/hooks/test/use-typography-props.js
index 93e4de29bc734..52f7bf97328ee 100644
--- a/packages/block-editor/src/hooks/test/use-typography-props.js
+++ b/packages/block-editor/src/hooks/test/use-typography-props.js
@@ -25,4 +25,26 @@ describe( 'getTypographyClassesAndStyles', () => {
 			},
 		} );
 	} );
+
+	it( 'should return fluid font size styles', () => {
+		const attributes = {
+			fontFamily: 'tofu',
+			style: {
+				typography: {
+					letterSpacing: '22px',
+					fontSize: '2rem',
+					textTransform: 'uppercase',
+				},
+			},
+		};
+		expect( getTypographyClassesAndStyles( attributes, true ) ).toEqual( {
+			className: 'has-tofu-font-family',
+			style: {
+				letterSpacing: '22px',
+				fontSize:
+					'clamp(1.5rem, 1.5rem + ((1vw - 0.48rem) * 2.885), 3rem)',
+				textTransform: 'uppercase',
+			},
+		} );
+	} );
 } );
diff --git a/packages/block-editor/src/hooks/use-typography-props.js b/packages/block-editor/src/hooks/use-typography-props.js
index d08105d8d90c1..d70ae08aafc59 100644
--- a/packages/block-editor/src/hooks/use-typography-props.js
+++ b/packages/block-editor/src/hooks/use-typography-props.js
@@ -9,6 +9,7 @@ import classnames from 'classnames';
  */
 import { getInlineStyles } from './style';
 import { getFontSizeClass } from '../components/font-sizes';
+import { getComputedFluidTypographyValue } from '../components/font-sizes/fluid-utils';
 
 // This utility is intended to assist where the serialization of the typography
 // block support is being skipped for a block but the typography related CSS
@@ -18,12 +19,26 @@ import { getFontSizeClass } from '../components/font-sizes';
  * Provides the CSS class names and inline styles for a block's typography support
  * attributes.
  *
- * @param {Object} attributes Block attributes.
+ * @param {Object}  attributes            Block attributes.
+ * @param {boolean} isFluidFontSizeActive Whether the function should try to convert font sizes to fluid values.
  *
  * @return {Object} Typography block support derived CSS classes & styles.
  */
-export function getTypographyClassesAndStyles( attributes ) {
-	const typographyStyles = attributes?.style?.typography || {};
+export function getTypographyClassesAndStyles(
+	attributes,
+	isFluidFontSizeActive
+) {
+	let typographyStyles = attributes?.style?.typography || {};
+
+	if ( isFluidFontSizeActive ) {
+		typographyStyles = {
+			...typographyStyles,
+			fontSize: getComputedFluidTypographyValue( {
+				fontSize: attributes?.style?.typography?.fontSize,
+			} ),
+		};
+	}
+
 	const style = getInlineStyles( { typography: typographyStyles } );
 	const fontFamilyClassName = !! attributes?.fontFamily
 		? `has-${ kebabCase( attributes.fontFamily ) }-font-family`
diff --git a/packages/block-library/src/search/edit.js b/packages/block-library/src/search/edit.js
index 807dda04e743e..377788d281d3d 100644
--- a/packages/block-library/src/search/edit.js
+++ b/packages/block-library/src/search/edit.js
@@ -16,6 +16,7 @@ import {
 	getTypographyClassesAndStyles as useTypographyProps,
 	store as blockEditorStore,
 	__experimentalGetElementClassName,
+	useSetting,
 } from '@wordpress/block-editor';
 import { useDispatch, useSelect } from '@wordpress/data';
 import { useEffect } from '@wordpress/element';
@@ -113,7 +114,11 @@ export default function SearchEdit( {
 	}
 
 	const colorProps = useColorProps( attributes );
-	const typographyProps = useTypographyProps( attributes );
+	const fluidTypographyEnabled = useSetting( 'typography.fluid' );
+	const typographyProps = useTypographyProps(
+		attributes,
+		fluidTypographyEnabled
+	);
 	const unitControlInstanceId = useInstanceId( UnitControl );
 	const unitControlInputId = `wp-block-search__width-${ unitControlInstanceId }`;
 	const isButtonPositionInside = 'button-inside' === buttonPosition;