Screen Refresh Rate Test

What Is the Screen Refresh Rate Test?

The Screen Refresh Rate Test measures how often your screen updates the image, in hertz (Hz). A 60 Hz display refreshes 60 times every second.

The tool does not rely on the number in your display settings. It measures your refresh rate live, while the page runs, and shows the result as a large Hz number. It also shows frame time, stability, and frame drops, so you can see whether your screen is running smoothly.

What You’ll See on the Tool

Live Hz Reading

The main panel shows your current refresh rate and a status label, “Measuring Live Refresh Rate…”. Below it, a badge shows the standard display rate the tool detected. In our test, it read 60 Hz.

Four Performance Stats

• Frame Time: How long each frame stays on screen, in milliseconds. At 60 Hz, this is about 16.67 ms.
• Min / Max Hz: The lowest and highest refresh rates seen during the test. A reading of 38 / 60 means the rate dipped to 38 Hz at some point.
• Stability: A percentage showing how steady your refresh rate was. In our test, it read 98.4%.
• Frame Drops: A running count of dropped frames. In our test, it read 6.

Visual Smoothness Comparison

Three moving objects run at once, each at a different frame rate:

• 100% Native (60 fps)
• 50% Rate (30 fps)
• 25% Rate (15 fps)

Watching them side by side shows what lower frame rates look like on your own screen. A Speed dropdown (Medium by default) changes how fast the objects move.

Real-Time Hz Stability Graph

This graph plots your refresh rate as frames are sampled, with a running count of sampled frames. A flat, steady line means a steady refresh rate. Dips or spikes mean it is changing.

Screen Details

At the bottom, the tool lists your screen resolution, pixel ratio, and color depth. In our test, these were 1440 × 810, 1.37x, and 24-bit.

How to Run the Test

1. Open the tool. It starts measuring right away.
2. Wait a few seconds for the Hz number and stats to settle.
3. Check the Hz reading, then look at Min / Max Hz and Stability.
4. Watch the three moving objects to compare 60, 30, and 15 fps.
5. Check the graph for dips.
6. Use Pause Test to freeze the numbers. Use Reset Stats to start a fresh measurement. Use Copy Report to copy your results.

How to Read Your Results

Hz reading: This is the refresh rate the tool measured. If you paid for a higher-refresh display and see 60 Hz, check your display settings.

Min / Max gap: A small gap means a steady rate. A large gap, like 38 / 60, means your rate dropped during the test. Check that the Stability percentage and the graph agree.

Stability and frame drops: A high stability value with few drops suggests smooth performance. Lower stability or rising drops suggest something is interrupting the display.

Smoothness comparison: If the 60 fps object looks clearly smoother than the 30 and 15 fps ones, you are seeing the effect of frame rate directly.

Tips for a More Accurate Reading

• Close heavy background tabs before testing.
• Turn off Battery Saver or Low Power Mode. The tool’s own tip notes these can affect results.
• Use Reset Stats after closing apps, so old readings don’t mix with new ones.
• Let the test run for a while. The “Frames Sampled” count grows over time, and a longer sample gives you a better picture than a few seconds.

Who Is This Tool For?

• Gamers checking that a high-refresh monitor is really running at its rated speed.
• Laptop and phone buyers verifying a display’s refresh rate.
• Anyone troubleshooting choppy motion who wants to see frame drops and stability numbers.
• Developers and designers who want a quick report of refresh rate, resolution, and pixel ratio. Use Copy Report to save the results.

Frequently Asked Questions

Why does my Min Hz show lower than my Max Hz?

Min / Max Hz records the lowest and highest rates seen during the test. A lower minimum means the rate dipped at some point. Closing background tabs and turning off power-saving modes may help. Then press Reset Stats and test again.

Is a 98.4% stability score good?

It is close to steady, but read it alongside the other numbers. Check the frame drop count and the graph. A mostly flat line with a few drops is a good sign. Frequent dips suggest something is affecting performance.

What does the pixel ratio mean?

The pixel ratio is shown in the screen details section, next to resolution and color depth. It reports how your screen’s display settings are being read, such as 1.37x in our test.

What’s the difference between Pause Test and Reset Stats?

Pause Test stops the live measurement so you can look at the numbers. Reset Stats clears the collected data, including min/max, drops, and sampled frames, and starts again.

What do I get from Copy Report?

It copies your test results so you can paste them elsewhere, for example into a support ticket or a note.

Why do I see three objects moving at different smoothness levels?

They run at 60, 30, and 15 fps at the same time. This shows how frame rate affects motion, using your own display.