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Mouse Diagnostic

Mouse Polling Rate Checker

Test your gaming mouse polling rate in Hz online for free. Measure 125Hz, 500Hz, 1000Hz, 4000Hz, and 8000Hz (8KHz) report intervals and jitter.

MOVE MOUSE RAPIDLY INSIDE THIS BOX 0 Hz 0.00 ms update interval
AVERAGE HZ 0 Hz
MAX PEAK HZ 0 Hz
RATING Move Mouse

Mouse Polling Rate Performance Tiers

1000Hz – 8000Hz (0.125ms – 1.0ms)

Competitive Esports Tier. Near-zero cursor delay; eliminates micro-stutter on 240Hz, 360Hz, and 540Hz displays.

500Hz (2.0ms)

Standard Gaming Baseline. Balanced tracking performance with minimal CPU interrupt overhead.

125Hz (8.0ms)

Office Mouse Default. High cursor latency and visible stair-stepping motion in fast-paced FPS shooters.

How to Get Started

Just three steps to run a complete controller test and understand your controller's health status.

01

Connect Controller

Connect your controller to your computer via USB cable or Bluetooth. If the browser doesn't respond, press any button on the controller to activate the connection.

02

Button Detection

Press each button in the visual interface and confirm the corresponding area lights up on screen. This helps troubleshoot unresponsive or double-clicking buttons.

03

Sticks & Vibration

Rotate the sticks to check linearity and drift issues; click the vibration test button to feel if the left and right motor feedback is working properly.

What would you like to do next?

Select a diagnostic calibration suite, deadzone analyzer, or high-frequency overclock tool.

Fix

Repair & Calibration

Calibrate zero-point offsets or follow step-by-step repair guides.

WebHID Calibration
Optimize

Game Deadzones

Calculate exact radial vs axial deadzone overlays for Fortnite, Apex, & COD.

Deadzone Calculator
Telemetry

Overclock & Circularity

Verify browser-observed update timing Hz stability and statistical circularity grades.

Hz & Circularity Tools

Need to measure true hardware DPI?

Calculate your optical sensor's true Dots Per Inch (DPI) and test for sensor deviation.

DPI Analyzer CPS Speed Test

Related Diagnostic Tools

DPI Analyzer

Calculate true optical mouse sensor DPI.

Click Latency

Measure switch response time in ms.

CPS Test

Test clicks per second speed.

The Physics of Mouse Report Rates & High-Refresh Displays

Your mouse's polling rate (measured in Hertz, Hz) determines how frequently the onboard optical sensor (such as PixArt PAW3395, PAW3950, or Logitech HERO 2) sends USB interrupt packets containing $(X, Y)$ coordinate displacement data to the operating system.

Report Intervals & Display Frame Pacing

  • 125Hz (8.0ms interval): On a 240Hz monitor (refreshing every 4.16ms), a 125Hz mouse skips entire video frames between coordinate updates, creating visible cursor judder.
  • 1000Hz (1.0ms interval): Dispatches 1 report per millisecond, ensuring 4 fresh coordinate packets for every frame displayed at 240Hz.
  • 8000Hz (0.125ms interval): Dispatches 8 reports per millisecond, aligning with pixel scanout on ultra-high-refresh 360Hz, 480Hz, and 540Hz OLED gaming monitors.

USB Host Controllers & 8KHz CPU Interrupt Demands

Running 8000Hz polling requires connecting your mouse directly to a rear motherboard USB 3.2 Gen 2 port directly routed to the CPU PCIe lanes (avoiding unpowered front panel USB headers or external hubs) to prevent packet queue congestion and USB bus resets.

Controller Hardware Glossary & Tips

Stick Drift & Deadzones

Stick drift occurs when analog sticks register input without being touched. This is typically caused by physical wear in traditional carbon-film potentiometers. A deadzone is a software-level threshold (e.g., 5-10%) applied to ignore these microscopic false inputs.

Hall Effect Sensors

Unlike traditional ALPS potentiometers, Hall Effect modules use magnetic fields to measure stick position. Because there is no physical contact or friction between the internal components, they are virtually immune to wear-induced stick drift, drastically extending the controller's lifespan.

Polling Rate (Hz) & Input Latency

Polling rate is how often your controller sends data to your device, measured in Hertz (Hz). A standard Bluetooth connection yields around 125Hz (8ms latency). Overclocking or using a wired USB connection can push this to 500Hz-1000Hz (1ms-2ms latency), critical for competitive gaming.

Circularity Error

When you rotate a joystick along its outer edge, a perfect module should trace a mathematically perfect circle. Circularity error measures the deviation from this perfect circle. High deviations (>15%) can result in uneven diagonal movement speeds in FPS games.

Frequently Asked Questions

Everything you need to know about testing your controller.

How do I test my mouse polling rate (Hz) online?

Move your mouse cursor rapidly in circles inside the test zone above. The diagnostic engine calculates the millisecond delta between successive mousemove PointerEvents and displays your real-time peak and average polling frequency in Hertz (Hz).

What is the difference between 125Hz, 1000Hz, and 8000Hz (8KHz)?

A standard office mouse polls at 125Hz (updates every 8.0ms). A standard gaming mouse polls at 1000Hz (updates every 1.0ms). Modern 8000Hz (8KHz) gaming mice transmit cursor updates every 0.125ms, virtually eliminating cursor position quantization on 240Hz+ displays.

Why does my 4000Hz or 8000Hz mouse cause game stuttering or FPS drops?

8KHz polling generates up to 8,000 CPU interrupts per second, saturating a single CPU core in game engines (like older DirectX 11 titles) that process window messages on the main render thread. Running a modern multi-threaded CPU and enabling raw input fixes micro-stutter.

Why is my mouse polling rate lower than advertised during slow movements?

Optical sensors only dispatch USB interrupt packets when physical cursor motion exceeds sensor count thresholds. Slow, deliberate mouse movements naturally report lower instantaneous Hz because fewer report packets are required.

How do I change my mouse polling rate to 1000Hz or higher?

Open your mouse manufacturer software (Logitech G HUB, Razer Synapse, Glorious Core, Wootility) and navigate to Device Settings > Polling Rate / Report Rate. Select 1000Hz, 2000Hz, 4000Hz, or 8000Hz.

How this test works & its limits
  • This test reads your controller through the browser's standard Gamepad API — no drivers, no installs, nothing leaves your device.
  • Readings depend on connection mode: Bluetooth reports at lower rates than USB. Compare like-for-like (wired vs wired).
  • We measure the input reaching the browser — display lag and game-engine queues are outside this test's view.
  • A clean reading now does not guarantee no drift in-game: deadzones differ per game, and wear develops over time. Use the Drift Timeline to track yours.
  • This is a diagnostic, not a hardware-lab certification. For repair or RMA decisions, confirm with a second run or second tool.
Read the full methodology
100% Client-Side

All Gamepad API data stays in your browser. Zero tracking or data collection.

Instant Results

No downloads, plugins, or software installation needed. Works instantly.

Free Forever

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