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Motion & Timing

Refresh Rate Test

Measure your real refresh rate and watch a moving reference.

…Hz

Measured from animation frames

How to use

  1. 1Click Start — the measured refresh rate appears within a second or two.
  2. 2Watch the moving box to confirm motion looks smooth.
  3. 3Compare the reading to your panel's rated Hz.
  4. 4Press Esc to exit.

FAQ

Why is my measured rate slightly off?

Browsers measure refresh via animation frames, which can read a hair below the rated value (e.g. 143–144Hz). A large gap may mean the wrong refresh rate is selected in your OS settings.

Tips

  • Close other tabs and apps; background load can drag the measured rate below your panel's rating.
  • If you bought a high-refresh monitor, make sure the rate is actually selected in your OS display settings.

Related tests

Ghosting TestMoving boxes at selectable speeds to reveal ghosting and trails.Screen Tearing TestFast scrolling bars that reveal tearing without V-Sync/VRR.

Related guides

Learn more about what this test reveals and how to act on the results.

The Complete New-Device Screen Test ChecklistA 10-minute routine to inspect any new laptop, monitor, phone, or TV before the return window closes.How to Test a Monitor Before (and Right After) BuyingWhat to check in the store and at home so you don't keep a monitor with dead pixels, bleed, or the wrong refresh rate.Refresh Rate Explained: 60 vs 120 vs 144 vs 240HzWhat Hz actually means, where the jumps are most noticeable, and how to confirm you're getting what you paid for.Response Time vs Input Lag: They're Not the SameOne is how fast pixels change; the other is how long until your click appears. Both affect feel — differently.