diff --git a/packages/ra-ui-materialui/src/input/NumberInput.spec.tsx b/packages/ra-ui-materialui/src/input/NumberInput.spec.tsx
index b1842309504..72fcc55c2f4 100644
--- a/packages/ra-ui-materialui/src/input/NumberInput.spec.tsx
+++ b/packages/ra-ui-materialui/src/input/NumberInput.spec.tsx
@@ -7,7 +7,6 @@ import { AdminContext } from '../AdminContext';
 import { SaveButton } from '../button';
 import { SimpleForm, Toolbar } from '../form';
 import { required } from 'ra-core';
-import { Format, Parse } from './NumberInput.stories';
 
 describe('<NumberInput />', () => {
     const defaultProps = {
@@ -199,7 +198,7 @@ describe('<NumberInput />', () => {
     });
 
     describe('format and parse', () => {
-        it('should get the same value as injected value', async () => {
+        it('should get the same value as injected value ', async () => {
             const onSubmit = jest.fn();
 
             render(
@@ -291,31 +290,6 @@ describe('<NumberInput />', () => {
             });
             expect(onSubmit.mock.calls[0][0].views).toBeNull();
         });
-
-        it('should use custom format function prop', async () => {
-            render(<Format />);
-
-            const input = screen.getByLabelText('resources.posts.fields.views');
-            fireEvent.change(input, { target: { value: 5.6356487 } });
-
-            await waitFor(() => {
-                expect((input as HTMLInputElement).value).toEqual('5.6356487');
-                expect(
-                    (screen.getByDisplayValue('5.64') as HTMLInputElement).value
-                ).toEqual('5.64');
-            });
-        });
-
-        it('should use custom parse function prop', async () => {
-            render(<Parse />);
-
-            const input = screen.getByLabelText('Parse to two decimal');
-            fireEvent.change(input, { target: { value: 5.6356487 } });
-
-            await waitFor(() => {
-                expect((input as HTMLInputElement).value).toEqual('5.64');
-            });
-        });
     });
 
     describe('onChange event', () => {
diff --git a/packages/ra-ui-materialui/src/input/NumberInput.stories.tsx b/packages/ra-ui-materialui/src/input/NumberInput.stories.tsx
index 01cb5e2f77b..b2b217c1dd6 100644
--- a/packages/ra-ui-materialui/src/input/NumberInput.stories.tsx
+++ b/packages/ra-ui-materialui/src/input/NumberInput.stories.tsx
@@ -313,49 +313,3 @@ export const FieldState = () => (
         </Create>
     </AdminContext>
 );
-
-export const Format = () => (
-    <AdminContext>
-        <Create
-            resource="posts"
-            record={{ id: 123, views: 3.7594157 }}
-            sx={{ width: 600 }}
-        >
-            <SimpleForm>
-                <NumberInput source="views" />
-                <NumberInput
-                    source="views"
-                    label="Two decimals"
-                    format={v =>
-                        isNaN(v) ? 0 : Number(parseFloat(v).toFixed(2))
-                    }
-                    disabled
-                />
-                <FormInspector name="views" />
-            </SimpleForm>
-        </Create>
-    </AdminContext>
-);
-
-export const Parse = () => (
-    <AdminContext>
-        <Create
-            resource="posts"
-            record={{ id: 123, views: 3.77 }}
-            sx={{ width: 600 }}
-        >
-            <SimpleForm>
-                <NumberInput
-                    source="views"
-                    label="Parse to two decimal"
-                    format={v => (v ? String(v) : '0')}
-                    parse={v => {
-                        const float = Number(parseFloat(v).toFixed(2));
-                        return isNaN(float) ? null : float;
-                    }}
-                />
-                <FormInspector name="views" />
-            </SimpleForm>
-        </Create>
-    </AdminContext>
-);
diff --git a/packages/ra-ui-materialui/src/input/NumberInput.tsx b/packages/ra-ui-materialui/src/input/NumberInput.tsx
index 0f1cdbfd587..5de6eb18ef6 100644
--- a/packages/ra-ui-materialui/src/input/NumberInput.tsx
+++ b/packages/ra-ui-materialui/src/input/NumberInput.tsx
@@ -47,8 +47,6 @@ export const NumberInput = ({
         isRequired,
     } = useInput({
         defaultValue,
-        format,
-        parse,
         onBlur,
         resource,
         source,
@@ -60,7 +58,7 @@ export const NumberInput = ({
 
     // This is a controlled input that renders directly the string typed by the user.
     // This string is converted to a number on change, and stored in the form state,
-    // but that number is not displayed.
+    // but that number is not not displayed.
     // This is to allow transitory values like '1.0' that will lead to '1.02'
 
     // text typed by the user and displayed in the input, unparsed