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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. This value is an approximation given by rounding down to the nearest power of 2 and dividing that number by 1024. Also, the lower and upper bounds are used to protect privacy of owners of very low- or high-end devices.


const memory = navigator.deviceMemory
console.log ("This device has at least " + memory + "GiB of RAM.")


A floating point number.


Specification Status Comment
Device Memory 1
The definition of 'deviceMemory' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Chrome Full support 63Edge ? Firefox ? IE ? Opera Full support 50Safari ? WebView Android Full support 63Chrome Android Full support 63Firefox Android ? Opera Android Full support 46Safari iOS ? Samsung Internet Android ?


Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Étiquettes et contributeurs liés au document

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Dernière mise à jour par : bershanskiy,