Diagnostic Tool

Mouse Acceleration Test

An interactive observational test designed to measure speed-dependent pointer displacement variance and verify 1:1 linear spatial tracking.

Updated: 2026-08-24• 5 min read

1. Interactive Mouse Acceleration Test

Observational Velocity Test

Mouse Acceleration Tester

Step 1: Slow Swipe

⚠️

Observational Browser Test NoticeThis tool is a browser-level observational test measuring whether your cursor travels different pixel distances when swiped slowly versus quickly across the exact same physical desk distance. It cannot directly read OS kernel registry curves or in-game raw input drivers.

Trial 1: Slow Swipe

Ready

Place your mouse against a physical ruler. Move it exactly 10 cm slowly (taking ~3 seconds) across this box.

Click & Drag Horizontally (Slowly)0 px recorded

Recorded Displacement:---

Trial 2: Fast Swipe

Locked

Reset mouse to 0 cm. Flick the mouse across that same 10 cm as quickly as possible across this box.

Click & Drag Horizontally (Quickly)0 px recorded

Recorded Displacement:---

Observed Movement Evaluation

Slow Swipe Pixels---

Fast Swipe Pixels---

Velocity Variance---

Complete both the slow swipe (Trial 1) and fast swipe (Trial 2) over identical physical desk distance to evaluate whether pointer velocity changes total travel.

2. How the Observational Test Works

Linear 1:1 tracking means that moving your mouse 10 cm across your desk will always generate the exact same number of screen pixels, regardless of whether you move your hand slowly over 3 seconds or flick it across in 100 milliseconds.

If mouse acceleration is active, the operating system multiplies incoming coordinate counts by a speed coefficient. Consequently, the rapid flick will record significantly more pixels than the slow movement over the exact same physical distance.

3. Testing Methodology & Browser Limitations

Transparent Methodology Disclosure

Web browsers cannot directly inspect the Windows kernel registry or in-game mouse drivers.
This test relies on empirical observation: comparing displacement across two distinct velocity conditions.
For maximum accuracy, place a physical metric ruler firmly against your mousepad to ensure both swipes cover the exact same 10 cm distance.

4. How to Interpret Your Variance Results

0% to 8% Variance

Linear Tracking: Normal human ruler variance. Acceleration is almost certainly disabled.

> +10% Variance

Positive Acceleration: The fast swipe traveled further. Windows Enhance Pointer Precision or driver acceleration is active.

Negative Variance

Sensor Malfunction: Optical sensor spin-out or tracking loss during rapid flick movements.

5. How to Disable Acceleration in Windows

Press Win + R, type main.cpl, and hit Enter.
Click Pointer Options.
Uncheck "Enhance pointer precision".
Set pointer speed to 6/11 and click OK.

FAQ

Acceleration Test FAQ

Common questions about testing pointer velocity scaling.

Can a website definitely detect if Windows mouse acceleration is enabled?

No website has direct access to Windows kernel registry keys or hardware drivers. However, by measuring whether fast hand swipes travel substantially further in pixels than slow swipes over the exact same physical distance, we can reliably observe whether velocity scaling is occurring.

What is a normal variance percentage for linear tracking?

A variance between 0% and 8% is typical for linear tracking due to minor human hand alignment errors against a physical ruler.