Testing Multiple Gamepads for Local Multiplayer
When hosting fighting game tournaments or local couch co-op sessions, verifying controller health across all connected gamepads prevents input interference.
Controller Diagnostic
Multi-Controller Tester
Test up to 4 controllers at the same time online. Simultaneous multi-gamepad diagnostic for PS5, Xbox, Switch, and PC controllers.
Player 1 Disconnected
Gamepad 1
Left Stick: 0.0, 0.0
Right Stick: 0.0, 0.0
Buttons Active: None
Player 2 Disconnected
Gamepad 2
Left Stick: 0.0, 0.0
Right Stick: 0.0, 0.0
Buttons Active: None
Player 3 Disconnected
Gamepad 3
Left Stick: 0.0, 0.0
Right Stick: 0.0, 0.0
Buttons Active: None
Player 4 Disconnected
Gamepad 4
Left Stick: 0.0, 0.0
Right Stick: 0.0, 0.0
Buttons Active: None
Multi-Controller Setup Guidelines
All 4 gamepad slots update simultaneously. Ensure your USB hub or Bluetooth adapter supports multiple concurrent HID input devices.
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.
Optimize
Game Deadzones
Calculate exact radial vs axial deadzone overlays for Fortnite, Apex, & COD.
Telemetry
Overclock & Circularity
Verify true hardware polling Hz stability and statistical circularity grades.
Play & Practice
Browse all games Practice what you just tested
Turn your test results into skill. These arcade games train the exact inputs you just measured — drift, buttons, triggers, D-pad and reaction time.
Frequently Asked Questions
Everything you need to know about testing your controller.
How many controllers can I test simultaneously?
You can test up to 4 gamepads at the same time in your web browser. Each connected controller is assigned to Player 1 through Player 4 slots.
Can I test different controller brands at the same time?
Yes! You can connect a PS5 DualSense, Xbox Series Controller, Nintendo Switch Pro Controller, and a third-party gamepad at the same time.
Is this tool useful for couch multiplayer & fighting game tournaments?
Yes. It allows tournament organizers and party game hosts to verify all 4 controllers before starting matches.
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.
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
No paywalls, subscription requirements, or hidden usage limits.