Input Latency Test - Controller Lag Tester
Measure your controller's input latency and response time. Test input delay on Xbox, PlayStation, Nintendo Switch, and PC controllers. Essential for competitive gaming where every millisecond matters.
Connect Your Controller
Connect your gamepad to test input latency. The reaction test will measure how quickly your inputs register.
What is Input Latency?
Input latency (also called input lag or input delay) is the time between pressing a button on your controller and that action appearing on screen. Lower latency means more responsive controls.
Total input latency consists of:
- Controller latency - Time for the controller to send the signal
- USB/Bluetooth latency - Time for data transmission
- System processing - Time for your computer to process the input
- Game engine latency - Time for the game to react
- Display latency - Time for your monitor to show the result
How the Latency Test Works
Click Start Test
Press the "Start Test" button to begin. Keep your finger ready on any controller button.
Wait for Green
A red box will appear. Wait until it turns green (random delay 1-4 seconds).
Press Button
As soon as you see green, press any button on your controller as fast as possible.
See Results
Your reaction time (including input lag) is displayed in milliseconds. Repeat for accuracy.
Understanding Your Results
Professional-level reaction time. Your controller has minimal input lag.
Average reaction time. Suitable for most gaming scenarios.
Typical reaction time. May struggle in competitive fast-paced games.
Higher than average. Could indicate controller lag or wireless interference.
Note: This test measures your reaction time + controller latency combined. Human reaction time is typically 150-250ms, so subtract ~200ms to estimate pure controller lag.
How to Reduce Input Latency
Use Wired Connection
USB connections typically have 1-4ms less latency than Bluetooth wireless.
Enable Game Mode
Turn on Game Mode on your TV/monitor to reduce display processing latency.
Close Background Apps
Other applications can increase system latency. Close unnecessary programs.
Update Drivers
Keep your controller drivers and USB drivers up to date for optimal performance.
Use High Refresh Rate
120Hz+ monitors reduce perceived latency compared to 60Hz displays.
Disable V-Sync
V-Sync adds 1-3 frames of input lag. Disable it or use G-Sync/FreeSync instead.
Controller Input Latency Comparison
| Controller | Wired Latency | Wireless Latency |
|---|---|---|
| Xbox Series X Controller | ~4ms | ~8ms (Xbox Wireless) |
| PlayStation DualSense | ~4ms | ~6ms |
| Nintendo Switch Pro | ~6ms | ~12ms |
| 8BitDo Ultimate | ~2ms | ~4ms |
| Razer Wolverine V2 | ~1ms | N/A (Wired only) |
Input Latency FAQ
What's a good input latency for gaming?
For casual gaming, under 50ms total system latency is fine. Competitive gamers aim for under 20ms. This test measures reaction time + latency, so focus on consistency rather than absolute numbers.
Is wired always better than wireless?
Generally yes, but modern wireless tech like Xbox Wireless and PlayStation's protocols have minimal difference (2-4ms). Bluetooth typically adds more latency than proprietary wireless.
Why do my results vary?
Human reaction time naturally varies. Your alertness, fatigue, and focus affect results. Take multiple tests and use the average for a more accurate picture.
Does this test measure pure controller latency?
No, it measures your reaction time + controller latency + browser processing. Pure controller latency requires specialized hardware to measure accurately.