Hardware Tools HardwareTester Tools Tester

Magnetometer Tester

Measure ambient magnetic field strength in microteslas and view a live compass needle. Start the magnetometer, chart real-time readings, and calibrate heading instantly.

Idle
Magnetic Field Magnetic field strength
0.00 µT
X axis0.00 µT
Positive toward the device's right side (east-west).
Y axis0.00 µT
Positive toward the top edge (north-south).
Z axis0.00 µT
Positive perpendicular to the screen (upward).
Realtime Chart Realtime field strength
20 Hz

Keep the device steady to track the Earth's field, or move near magnets to see spikes.

Compass Compass heading
0°
N
E
S
W

Lay the device flat and rotate it slowly for the most stable heading.

About Magnetometer Tester

Magnetometer Tester visualizes the Earth's magnetic field in real time. Monitor X, Y, and Z axis readings, view the combined field strength on a live chart, and rotate a digital compass needle with precise headings. Perfect for testing phone sensors or exploring magnetic environments.

  1. Press Start testing and allow magnetometer access when prompted by the browser.
  2. Hold your device flat to see the baseline magnetic field strength and compass heading.
  3. Move the device near magnets or metal objects to observe spikes on the realtime chart.
  4. Use Calibrate compass to zero the heading from your current orientation.
  5. Reset when you want to clear the history and begin a fresh capture.
See also
SENSORS
WUTOOLS