diff --git a/src/cards/number-card/number-card.ts b/src/cards/number-card/number-card.ts
index 4b1c158e..f223f7a6 100644
--- a/src/cards/number-card/number-card.ts
+++ b/src/cards/number-card/number-card.ts
@@ -14,9 +14,6 @@ import {
   actionHandler,
   ActionHandlerEvent,
   computeRTL,
-  formatNumber,
-  getDefaultFormatOptions,
-  getNumberFormatOptions,
   handleAction,
   hasAction,
   HomeAssistant,
@@ -125,15 +122,10 @@ export class NumberCard
 
     let stateDisplay = this.hass.formatEntityState(stateObj);
     if (this.value !== undefined) {
-      const numberValue = formatNumber(
-        this.value,
-        this.hass.locale,
-        getNumberFormatOptions(
-          stateObj,
-          this.hass.entities[stateObj.entity_id]
-        ) ?? getDefaultFormatOptions(stateObj.state)
+      stateDisplay = this.hass.formatEntityState(
+        stateObj,
+        this.value.toString()
       );
-      stateDisplay = `${numberValue} ${stateObj.attributes.unit_of_measurement ?? ""}`;
     }
 
     const rtl = computeRTL(this.hass);
diff --git a/src/shared/input-number.ts b/src/shared/input-number.ts
index baa7eca1..8bfd9bd6 100644
--- a/src/shared/input-number.ts
+++ b/src/shared/input-number.ts
@@ -45,7 +45,7 @@ export class InputNumber extends LitElement {
   @property({ type: Number })
   public max?: number;
 
-  @property({ attribute: "false" })
+  @property({ attribute: false })
   public formatOptions: Intl.NumberFormatOptions = {};
 
   @state() pending = false;