Mouse drift is unintended cursor movement that occurs when your mouse is stationary. It is caused by optical sensor issues, dirty surfaces, low-quality sensors, or hardware defects.

What causes mouse cursor drift?

Common causes include dust or debris on the sensor lens, an inconsistent or reflective mouse pad surface, a faulty or aging optical sensor, incorrect DPI settings, or USB polling rate interference.

How much drift is normal?

Zero drift is ideal. Any drift above 5px over 10 seconds indicates a sensor or surface problem. Drift above 20px suggests a hardware defect or heavily contaminated surface.

How do I fix mouse drift?

Clean the sensor lens with a dry microfiber cloth, use a solid-colour non-reflective mouse pad, update mouse drivers, try a different USB port, and test on multiple surfaces to isolate the cause.

Does DPI affect drift?

Yes. Higher DPI amplifies any sensor noise, making small imperfections appear as larger movements on screen. Testing at your normal DPI gives the most representative result.

Mouse Drift Test — Detect Mouse Cursor Drift

Ready — 10s

Duration

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Mouse Drift Test

Move your cursor into this zone, then press Start Test

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Place Mouse & Hold Still

Move your cursor here, stop moving, then keep it still — the test starts automatically when the cursor is stationary for 1 second

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0.00 px/s drift

Time left: 10.0s — Keep mouse still!

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Test Complete!

0.0

px total drift • —

Press Reset to test again

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Total Drift (px)

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Peak px/s

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Direction

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Duration

Drift Distance Per Second — Breakdown

Session Stats

Last Drift—

Best (Lowest)—

Worst (Highest)—

Avg Drift—

Tests Run0

Recent History

No tests yet. Complete a test to see history.

Drift Rating Guide

0 px

✅ No Drift

Ideal

1–5 px

🟢 Minimal

Acceptable

6–15 px

🟡 Moderate

Investigate

16–30 px

🟠 High

Clean sensor

>30 px

🔴 Severe

Hardware issue

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What is Mouse Drift?

Mouse drift is unintended cursor movement that occurs when your mouse is completely stationary. It is caused by optical sensor noise, surface reflectivity issues, dust on the sensor lens, or a failing hardware component.

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Cleaning the Sensor

Use a dry microfiber cloth or a cotton swab to gently wipe the sensor lens on the underside of your mouse. Avoid liquids. Compressed air can remove loose debris. Clean the mouse pad surface as well for best results.

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Surface Matters

Highly reflective or transparent surfaces confuse optical sensors and cause drift. Use a solid-colour, non-glossy mouse pad. Cloth surfaces work best for most optical sensors. Avoid glass or mirrored desks.

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DPI & Drift

Higher DPI amplifies any sensor noise — the same tiny imperfection appears as a larger on-screen movement. Testing at your normal gaming DPI gives the most representative real-world result for your setup.

Frequently Asked Questions

Mouse drift is unintended cursor movement while your physical mouse is stationary. It is typically caused by sensor noise, dirty optics, reflective surfaces, or hardware defects.

Zero is ideal. 1–5 px over 10 seconds is considered acceptable noise. Above 5 px suggests a surface or sensor issue. Above 20 px may indicate a hardware defect requiring cleaning or replacement.

Higher DPI magnifies all sensor output — including noise — so the same physical imperfection reads as a larger pixel displacement at higher DPI settings. Test at your normal operating DPI for the most relevant measurement.

Clean the sensor lens, try a different mouse pad (cloth, non-reflective), update your mouse drivers, change the USB port, and test on multiple surfaces. If drift persists across all surfaces, the sensor may be defective.

The test measures cursor movement reported by the browser, so it works for any pointing device. However, trackpad drift has different causes (palm rejection, sensitivity settings) than optical mouse drift.

Drift (10s test)	Rating	Action
0 px	✅ No Drift	Perfect — no action needed
1–3 px	🟢 Excellent	Within normal sensor tolerance
4–5 px	🟢 Minimal	Acceptable — borderline normal
6–10 px	🟡 Moderate	Inspect surface and sensor
11–20 px	🟠 High	Clean sensor, change pad
21–30 px	🔴 Severe	Likely hardware fault
>30 px	🔴 Critical	Replace mouse or sensor

Surface Type	Drift Risk
Cloth (non-patterned)	🟢 Lowest
Cloth (patterned)	🟡 Low–Moderate
Hard plastic pad	🟡 Moderate
Bare wood desk	🟠 Moderate–High
Glossy or mirrored	🔴 Very High
Glass or acrylic	🔴 Extreme

Mouse Drift Test — Detect Mouse Cursor Drift

Session Stats

Recent History

Drift Rating Guide

What is Mouse Drift?

Cleaning the Sensor

Surface Matters

DPI & Drift

Frequently Asked Questions

⚙️ Settings

❓ Help & Guide

🖱 How to Use This Test

⚙️ What Is Being Measured

📊 Drift Score Reference

🔄 Why Longer Tests Score Higher

📈 DPI Effect on Score

🔍 Common Causes of Mouse Drift

🖱️ Sensor Technology Differences

🧹 Step-by-Step Fix Guide

🚫 When to Replace the Mouse

⚙️ Sensor Types & Drift Behaviour

📑 Mouse Pad Surface Guide

🔌 USB vs Wireless

🎯 Getting the Most Accurate Results

💪 Interpreting Direction

🗣 Gaming Impact of Drift

📌 Frequently Asked Questions

Mouse Drift Test — Detect Mouse Cursor Drift

Session Stats

Recent History

Drift Rating Guide

What is Mouse Drift?

Cleaning the Sensor

Surface Matters

DPI & Drift

Frequently Asked Questions

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