diff --git a/src/components/date_picker/super_date_picker/quick_select_popover/__snapshots__/quick_select_popover.test.tsx.snap b/src/components/date_picker/super_date_picker/quick_select_popover/__snapshots__/quick_select_popover.test.tsx.snap
index 5ab6de9a433..de67a54675d 100644
--- a/src/components/date_picker/super_date_picker/quick_select_popover/__snapshots__/quick_select_popover.test.tsx.snap
+++ b/src/components/date_picker/super_date_picker/quick_select_popover/__snapshots__/quick_select_popover.test.tsx.snap
@@ -136,6 +136,7 @@ exports[`EuiQuickSelectPanels customQuickSelectPanels should render custom panel
               aria-describedby="generated-id generated-id"
               aria-label="Time value"
               class="euiFieldNumber euiFieldNumber--compressed"
+              step="any"
               type="number"
               value="15"
             />
@@ -345,11 +346,11 @@ exports[`EuiQuickSelectPanels customQuickSelectPanels should render custom panel
           >
             <input
               aria-describedby="generated-id generated-id"
-              aria-invalid="false"
               aria-label="Refresh interval value"
               class="euiFieldNumber euiFieldNumber--fullWidth euiFieldNumber--compressed"
               data-test-subj="superDatePickerRefreshIntervalInput"
               disabled=""
+              step="any"
               type="number"
               value="0"
             />
diff --git a/src/components/form/field_number/__snapshots__/field_number.test.tsx.snap b/src/components/form/field_number/__snapshots__/field_number.test.tsx.snap
index 01d54d9fccc..cd938b81958 100644
--- a/src/components/form/field_number/__snapshots__/field_number.test.tsx.snap
+++ b/src/components/form/field_number/__snapshots__/field_number.test.tsx.snap
@@ -29,6 +29,7 @@ exports[`EuiFieldNumber props controlOnly is rendered 1`] = `
 <eui-validatable-control>
   <input
     class="euiFieldNumber"
+    step="any"
     type="number"
     value=""
   />
@@ -44,6 +45,7 @@ exports[`EuiFieldNumber props fullWidth is rendered 1`] = `
   <eui-validatable-control>
     <input
       class="euiFieldNumber euiFieldNumber--fullWidth"
+      step="any"
       type="number"
       value=""
     />
@@ -64,6 +66,7 @@ exports[`EuiFieldNumber props isInvalid is rendered from a prop 1`] = `
     <input
       aria-invalid="true"
       class="euiFieldNumber euiFormControlLayout--1icons"
+      step="any"
       type="number"
       value=""
     />
@@ -80,6 +83,7 @@ exports[`EuiFieldNumber props isLoading is rendered 1`] = `
   <eui-validatable-control>
     <input
       class="euiFieldNumber euiFormControlLayout--1icons euiFieldNumber-isLoading"
+      step="any"
       type="number"
       value=""
     />
@@ -98,6 +102,7 @@ exports[`EuiFieldNumber props readOnly is rendered 1`] = `
     <input
       class="euiFieldNumber"
       readonly=""
+      step="any"
       type="number"
       value=""
     />
@@ -114,6 +119,7 @@ exports[`EuiFieldNumber props value no initial value 1`] = `
   <eui-validatable-control>
     <input
       class="euiFieldNumber"
+      step="any"
       type="number"
       value=""
     />
@@ -130,6 +136,7 @@ exports[`EuiFieldNumber props value value is number 1`] = `
   <eui-validatable-control>
     <input
       class="euiFieldNumber"
+      step="any"
       type="number"
       value="0"
     />
diff --git a/src/components/form/field_number/field_number.spec.tsx b/src/components/form/field_number/field_number.spec.tsx
index a2621d95e5a..66dad13f41e 100644
--- a/src/components/form/field_number/field_number.spec.tsx
+++ b/src/components/form/field_number/field_number.spec.tsx
@@ -51,5 +51,20 @@ describe('EuiFieldNumber', () => {
       cy.get('input').click().type('2');
       checkIsInvalid();
     });
+
+    it('shows invalid state on blur', () => {
+      cy.mount(<EuiFieldNumber max={1} value={2} />);
+      checkIsValid();
+      cy.get('input').click();
+      cy.get('body').click('bottomRight');
+      checkIsInvalid();
+    });
+
+    it('does not show invalid state on decimal values by default', () => {
+      cy.mount(<EuiFieldNumber />);
+      checkIsValid();
+      cy.get('input').click().type('1.5');
+      checkIsValid();
+    });
   });
 });
diff --git a/src/components/form/field_number/field_number.tsx b/src/components/form/field_number/field_number.tsx
index 255a5d5c648..b4e6341eba1 100644
--- a/src/components/form/field_number/field_number.tsx
+++ b/src/components/form/field_number/field_number.tsx
@@ -48,8 +48,9 @@ export type EuiFieldNumberProps = Omit<
     max?: number;
     /**
      * Specifies the granularity that the value must adhere to.
-     * Accepts a `number` or the string `'any'` for no stepping to allow for any value.
-     * Defaults to `1`
+     * Accepts a `number`, e.g. `1` for integers, or `0.5` for decimal steps.
+     * Defaults to `"any"` for no stepping, which allows any decimal value(s).
+     * @default "any"
      */
     step?: number | 'any';
     inputRef?: Ref<HTMLInputElement>;
@@ -91,6 +92,7 @@ export const EuiFieldNumber: FunctionComponent<EuiFieldNumberProps> = (
     name,
     min,
     max,
+    step = 'any',
     value,
     isInvalid,
     fullWidth = defaultFullWidth,
@@ -101,7 +103,8 @@ export const EuiFieldNumber: FunctionComponent<EuiFieldNumberProps> = (
     inputRef,
     readOnly,
     controlOnly,
-    onKeyUp: _onKeyUp,
+    onKeyUp,
+    onBlur,
     ...rest
   } = props;
 
@@ -113,19 +116,11 @@ export const EuiFieldNumber: FunctionComponent<EuiFieldNumberProps> = (
     true | undefined
   >();
 
-  // Note that we can't use hook into `onChange` because browsers don't emit change events
-  // for invalid values - see https://github.com/facebook/react/issues/16554
-  const onKeyUp = useCallback(
-    (e: React.KeyboardEvent<HTMLInputElement>) => {
-      _onKeyUp?.(e);
-
-      const { validity } = e.target as HTMLInputElement;
-      // Prefer `undefined` over `false` so that the `aria-invalid` prop unsets completely
-      const isInvalid = !validity.valid || undefined;
-      setIsNativelyInvalid(isInvalid);
-    },
-    [_onKeyUp]
-  );
+  const checkNativeValidity = useCallback((inputEl: HTMLInputElement) => {
+    // Prefer `undefined` over `false` so that the `aria-invalid` prop unsets completely
+    const isInvalid = !inputEl.validity.valid || undefined;
+    setIsNativelyInvalid(isInvalid);
+  }, []);
 
   const numIconsClass = controlOnly
     ? false
@@ -147,16 +142,27 @@ export const EuiFieldNumber: FunctionComponent<EuiFieldNumberProps> = (
       <input
         type="number"
         id={id}
+        name={name}
         min={min}
         max={max}
-        name={name}
+        step={step}
         value={value}
         placeholder={placeholder}
         readOnly={readOnly}
         className={classes}
         ref={inputRef}
-        onKeyUp={onKeyUp}
-        aria-invalid={isInvalid == null ? isNativelyInvalid : isInvalid}
+        aria-invalid={isInvalid || isNativelyInvalid}
+        onKeyUp={(e) => {
+          // Note that we can't use `onChange` because browsers don't emit change events
+          // for invalid text - see https://github.com/facebook/react/issues/16554
+          onKeyUp?.(e);
+          checkNativeValidity(e.currentTarget);
+        }}
+        onBlur={(e) => {
+          // Browsers can also set/determine validity (e.g. when `step` is undefined) on focus blur
+          onBlur?.(e);
+          checkNativeValidity(e.currentTarget);
+        }}
         {...rest}
       />
     </EuiValidatableControl>
diff --git a/src/components/form/range/__snapshots__/range_input.test.tsx.snap b/src/components/form/range/__snapshots__/range_input.test.tsx.snap
index bd95190f1c2..3ed468af4b0 100644
--- a/src/components/form/range/__snapshots__/range_input.test.tsx.snap
+++ b/src/components/form/range/__snapshots__/range_input.test.tsx.snap
@@ -11,6 +11,7 @@ exports[`EuiRangeInput renders 1`] = `
       class="euiFieldNumber euiRangeInput euiRangeInput--max emotion-euiRangeInput"
       max="100"
       min="0"
+      step="any"
       style="inline-size: calc(12px + 1ch + 2em + 0px);"
       type="number"
       value="0"
diff --git a/upcoming_changelogs/6760.md b/upcoming_changelogs/6760.md
new file mode 100644
index 00000000000..c34e1c78eca
--- /dev/null
+++ b/upcoming_changelogs/6760.md
@@ -0,0 +1,3 @@
+**Breaking changes**
+
+- `EuiFieldNumber` now defaults the `step` prop to `"any"`