Windows: Open Settings > System > About and check Installed RAM
Windows: Press Ctrl + Shift + Esc, open Task Manager, and check Memory under Performance
Windows: Press Win + R, type msinfo32, and check Installed Physical Memory
Mac: Click the Apple menu > About This Mac and check Memory
Mac: Open System Settings > General > About and check Memory
Linux: Open a terminal and run free -h
Linux: Open a terminal and run cat /proc/meminfo
Linux: Open a terminal and run sudo dmidecode -t memory
Chromebook: Open Settings > About ChromeOS > Diagnostics or Device details
iPhone and iPad: Check the device model specifications, since RAM is not shown directly in Settings
Android: Check Settings > About phone, or use a device info app if RAM is not listed
Check the computer’s original specifications online using the exact model number
Open the device case or back panel and read the RAM label on the installed memory modules