Navigator.deviceMemory

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The deviceMemory read-only property of the Navigator interface returns the approximate amount of device memory in gigabytes.

The reported value is imprecise to curtail fingerprinting. It’s approximated by rounding down to the nearest power of 2, then dividing that number by 1024. It is then clamped within lower and upper bounds to protect the privacy of owners of very low- or high-memory devices.

Syntax

memoryAmount = navigator.deviceMemory

Value

A floating point number; one of 0.25, 0.5, 1, 2, 4, 8.

Example

const memory = navigator.deviceMemory
console.log (`This device has at least ${memory}GiB of RAM.`)

Specifications

Specification
Device Memory # sec-device-memory-js-api

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`deviceMemory`	63	79	No	No	50	No	63	63	No	46	No	8.0