Understanding the result
X, Y and Z show acceleration values supplied by device-motion events. Movement or tilting can change them, and some browsers include gravity.
Mobile checks
Accelerometer Test
Start the sensor, then tilt or gently move the phone. The X, Y and Z readings show the motion data exposed to this page.
X—m/s²
Y—m/s²
Z—m/s²
Some browsers include gravity in their motion reading and others restrict sensor access.
How to use this tool
- Open this page on a phone.
- Tap Start and grant motion access if asked.
- Move the device gently; avoid dropping or shaking it hard.
Troubleshooting
- Open the page over HTTPS on a phone, press Start, and grant motion permission when requested.
- If readings stay empty, inspect browser sensor permissions and confirm another motion-aware app works on the device.
Browser and device limitations
Units and gravity handling can vary by implementation; the readings are not a calibrated physical measurement.
RELATED TOOLS
All toolsKeep checking
Touch Screen TestDraw across the screen to find areas that miss touches.Open toolMulti Touch TestCount simultaneous fingers detected by your touchscreen.Open toolVibration TestTry a short vibration pattern on a supported phone.Open toolGyroscope TestWatch orientation values change as you turn your phone.Open toolStuck Pixel FixerRun a small changing-color patch over a suspected stuck pixel.Open tool
Common questions
Why do numbers move while the phone is still?
Gravity and sensor noise may be included in the reading.
Why is the result unavailable?
Your browser may not expose motion events or may need permission in its settings.
Can this detect a faulty accelerometer?
It can reveal whether browser readings change, but it cannot diagnose or certify the sensor hardware.