Accelerometer Test
Press Start, allow motion access if asked, then tilt and shake your device. Values come straight from the sensor.
Runs in your browser — nothing is uploadedX—
Y—
Z—
Total —Peak —Rate —
How to use Accelerometer Test
- Open this page on a phone or tablet and press Start.
- Allow motion access if your browser asks (iPhone does).
- Tilt, turn and shake the device and watch the axes respond.
Formula & assumptions
- Readings come straight from your device’s sensors — nothing is simulated, recorded or sent.
Questions
What should the values be at rest?
Lying flat, the Z axis shows about 9.8 m/s² (1 g, gravity) and X and Y stay near 0. Without gravity, all three should be close to 0.
Why are there no readings on my laptop?
Most computers have no accelerometer. Use a phone or tablet; desktops will show a clear “no sensor” message.
Why does iPhone ask for permission?
iOS requires you to allow “Motion & Orientation Access” for each site. You can change it later in Safari’s website settings.