Accelerometer Test – Check Your Phone’s Motion Sensor
Motion sensorReady
- Runs locally, nothing uploaded
- Allow permissions when asked
- Some sensors need a phone
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Phone accelerometer checker
Tilt and shake your device to check the accelerometer. Values include gravity (about 9.8 m/s² on the axis facing down).
What the accelerometer does
It measures acceleration including gravity, used for screen rotation, step counting and games.
Desktop computers
Most laptops and desktops have no accessible accelerometer, so values stay empty.
How to Use the
Accelerometer Test
- 01
Open
use a phone or tablet.
- 02
Start
press Start and allow motion access on iPhone.
- 03
Tilt
the bubble moves and values change.
- 04
Check
flat on a table, z should read about 9.8.
What the accelerometer does
It measures acceleration including gravity, used for screen rotation, step counting and games.
Desktop computers
Most laptops and desktops have no accessible accelerometer, so values stay empty.
Sensor FAQ
Is my accelerometer working?
Flat on a table z ≈ 9.8 m/s²; tilting moves the value to x or y.
Why does it first move one way then back?
Acceleration reverses when you stop moving, so the reading swings both ways.
Answers about motion readings
Why the reading swings in the opposite direction
When you stop a movement the device decelerates, so the sensor briefly reports acceleration the other way.
Does it detect spinning?
Rotation is measured by the gyroscope; use the gyroscope test for spin.
Other phone functions you can check
Gyroscope, touch screen, multi-touch, vibration, camera and microphone all have tests on this site.
Related guides and fixes
Learn more in these guides: Webcam not working, Keyboard ghosting explained, Fix mouse double clicking, Webcam settings.
Frequently Asked Questions
Q.iPhone asks permission?
Yes, iOS requires a tap and permission.
Q.Values stay zero?
No sensor or blocked by browser.
Q.Is anything uploaded?
No. Everything runs locally in your browser.