diff --git a/packages/components/src/components/input-number/controller.ts b/packages/components/src/components/input-number/controller.ts
index a784c757ec..c2c8f6b295 100644
--- a/packages/components/src/components/input-number/controller.ts
+++ b/packages/components/src/components/input-number/controller.ts
@@ -72,7 +72,7 @@ export class InputNumberController extends InputIconController implements InputN
 
 		// set the value here when the value is switched between blank and set (or vice versa) to enable value resets via setting null as value.
 		if (!!(event.target as HTMLInputElement).value !== !!this.component._value) {
-			this.component._value = (event.target as HTMLInputElement).value as number | Iso8601;
+			this.component._value = parseFloat((event.target as HTMLInputElement).value);
 		}
 	}
 
diff --git a/packages/components/src/components/input-number/shadow.tsx b/packages/components/src/components/input-number/shadow.tsx
index 9da094ecba..d8dfb22e5e 100644
--- a/packages/components/src/components/input-number/shadow.tsx
+++ b/packages/components/src/components/input-number/shadow.tsx
@@ -11,7 +11,6 @@ import type {
 	InputNumberStates,
 	InputTypeOnDefault,
 	InputTypeOnOff,
-	Iso8601,
 	KoliBriHorizontalIcons,
 	LabelWithExpertSlotPropType,
 	MsgPropType,
@@ -171,12 +170,12 @@ export class KolInputNumber implements InputNumberAPI, FocusableElement {
 	/**
 	 * Defines the largest possible input value.
 	 */
-	@Prop() public _max?: number | Iso8601;
+	@Prop() public _max?: number;
 
 	/**
 	 * Defines the smallest possible input value.
 	 */
-	@Prop() public _min?: number | Iso8601;
+	@Prop() public _min?: number;
 
 	/**
 	 * Defines the properties for a message rendered as Alert component.
@@ -255,7 +254,7 @@ export class KolInputNumber implements InputNumberAPI, FocusableElement {
 	/**
 	 * Defines the value of the input.
 	 */
-	@Prop({ mutable: true, reflect: true }) public _value?: number | Iso8601 | null;
+	@Prop({ mutable: true, reflect: true }) public _value?: number | null;
 
 	@State() public state: InputNumberStates = {
 		_autoComplete: 'off',
@@ -322,12 +321,12 @@ export class KolInputNumber implements InputNumberAPI, FocusableElement {
 	}
 
 	@Watch('_max')
-	public validateMax(value?: number | Iso8601): void {
+	public validateMax(value?: number): void {
 		this.controller.validateMax(value);
 	}
 
 	@Watch('_min')
-	public validateMin(value?: number | Iso8601): void {
+	public validateMin(value?: number): void {
 		this.controller.validateMin(value);
 	}
 
@@ -397,7 +396,7 @@ export class KolInputNumber implements InputNumberAPI, FocusableElement {
 	}
 
 	@Watch('_value')
-	public validateValue(value?: number | Iso8601 | null): void {
+	public validateValue(value?: number | null): void {
 		this.controller.validateValueEx(value);
 	}
 
diff --git a/packages/components/src/schema/components/input-number.ts b/packages/components/src/schema/components/input-number.ts
index 6f0b9766b9..99444c40a3 100644
--- a/packages/components/src/schema/components/input-number.ts
+++ b/packages/components/src/schema/components/input-number.ts
@@ -17,14 +17,14 @@ import type {
 	PropSyncValueBySelector,
 	PropTouched,
 } from '../props';
-import type { InputTypeOnDefault, InputTypeOnOff, Iso8601, KoliBriHorizontalIcons, OptionalInputProps, Stringified, W3CInputValue } from '../types';
+import type { InputTypeOnDefault, InputTypeOnOff, KoliBriHorizontalIcons, OptionalInputProps, Stringified, W3CInputValue } from '../types';
 import type { ButtonProps } from './button';
 
 type RequiredProps = PropLabelWithExpertSlot;
 type OptionalProps = {
 	msg: Stringified<MsgPropType>;
 	placeholder: string;
-} & OptionalInputProps<number | Iso8601> &
+} & OptionalInputProps<number> &
 	PropHideError &
 	PropSuggestions;