Window.innerHeight

The read-only innerHeight property of the Window interface returns the interior height of the window in pixels, including the height of the horizontal scroll bar, if present.

The value of innerHeight is taken from the height of the window's layout viewport. The width can be obtained using the innerWidth property.

Syntax

let intViewportHeight = window.innerHeight;

Value

An integer value indicating the window's layout viewport height in pixels. The property is read only and has no default value.

To change the width of the window, call one of its resize methods, such as resizeTo() or resizeBy().

Usage notes

To obtain the height of the window minus its horizontal scroll bar and any borders, use the root <html> element's clientHeight() property instead.

Both innerHeight and innerWidth are available on any window or any object that behaves like a window, such as a tab or frame.

Example

Assuming a frameset

var intFrameHeight = window.innerHeight; // or

var intFrameHeight = self.innerHeight;
// will return the height of the frame viewport within the frameset

var intFramesetHeight = parent.innerHeight;
// will return the height of the viewport of the closest frameset

var intOuterFramesetHeight = top.innerHeight;
// will return the height of the viewport of the outermost frameset

FIXME: link to an interactive demo here

To change the size of a window, see window.resizeBy() and window.resizeTo().

To get the outer height of a window, i.e. the height of the whole browser window, see window.outerHeight.

Graphical example

The following figure shows the difference between outerHeight and innerHeight.

innerHeight vs outerHeight illustration

Specification

Specification	Status	Comment
CSS Object Model (CSSOM) View Module The definition of 'window.innerHeight' in that specification.	Working Draft	Initial definition

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`innerHeight`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1 Full support 1 No support 4 — 24 Notes Notes This property was buggy and could give a wrong value before page load in certain circumstances, see bug 641188.	IE Full support 9	Opera Full support 9	Safari Full support 3	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4 Full support 4 No support 4 — 24 Notes Notes This property was buggy and could give a wrong value before page load in certain circumstances, see bug 641188.	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0

Legend

Full support: Full support
See implementation notes.: See implementation notes.