What Is Screen Hz?
Screen Hz tells you how often your display can refresh each second. It is one of the key factors behind how smooth motion and scrolling feel on monitors, laptops, tablets, and phones.
What Does Hz Mean on a Screen?
Hertz (Hz) is a frequency unit. On displays, it represents how many refresh cycles happen per second. A 60Hz screen refreshes up to 60 times per second, while a 120Hz panel can refresh up to 120 times per second.
Common Refresh Rates
- 60Hz: common baseline for office use and many standard displays.
- 90Hz/120Hz: smoother scrolling and animation on newer devices.
- 144Hz/165Hz/240Hz: common in gaming-focused monitors.
Screen Hz vs FPS
Screen Hz is display capacity; FPS is frame production. Smoothness depends on how well frame output and display refresh behavior align, not only on one number.
How to Test Screen Hz
Browser-based tests can estimate effective refresh behavior by sampling frame timing. Results are useful for practical checks, but they can vary with power mode, background tabs, external display routing, variable refresh rate behavior, and browser scheduling.
Screen Hz FAQ
What does Hz mean on a screen?
Hz (hertz) is how many times your display refreshes per second. For example, 60Hz means up to 60 refresh cycles each second.
Is screen Hz the same as FPS?
No. Screen Hz is display update capacity, while FPS is frame output from software or a game engine.
Why does my 144Hz monitor sometimes look like 60Hz?
Common causes include OS refresh settings, cable/port limits, battery saver mode, mirrored display settings, and browser throttling.
Can a browser measure real refresh rate perfectly?
Not perfectly. Browser tests provide useful estimates but can be affected by system load and background tab behavior.
What refresh rates are common today?
60Hz is still common, while 90Hz, 120Hz, 144Hz, and higher are increasingly common on gaming monitors and modern mobile devices.