Compass

How the online compass works

The online compass reads orientation information supplied by a compatible phone or tablet. When sensor permission is available, the heading rotates as the device turns and displays a direction measured clockwise from north: 0° or 360° is north, 90° is east, 180° is south and 270° is west.

Getting a more stable reading

1. Use a device that includes orientation or magnetometer sensors.
2. Allow motion or orientation access when the browser asks.
3. Hold the device flat and keep it away from speakers, magnets, vehicles and large metal objects.
4. Turn slowly and wait for the heading to settle before using the result.
5. If the direction appears inaccurate, move to an open area and recalibrate the device according to its manufacturer’s instructions.

True north and magnetic north

A device compass may report a magnetic heading or a heading adjusted by the operating system. Magnetic north and geographic true north are not identical, and the difference varies by location and time. This page displays the heading provided by the device; it does not calculate local magnetic declination or replace a surveyed bearing.

Why a compass may not activate

Desktop computers usually lack the required sensors. Some browsers restrict sensor access unless the page is secure, the user grants permission or the device is moved. Privacy settings, low-power modes and browser differences can also affect availability. If no heading appears, try a compatible mobile device and confirm that motion and orientation permissions are enabled for the browser.

Accuracy and safety

Phone cases with magnets, nearby electronics and metal structures can distort the reading. Use the result for general orientation only. Do not rely on this browser compass as the sole navigation method for hiking, marine travel, aviation, emergency response, surveying or any safety-critical activity. Carry an appropriate map, calibrated compass or approved navigation equipment.

Frequently asked questions

Why does the heading jump?

Magnetic interference, movement or limited sensor calibration can make readings fluctuate.

Why does it work on my phone but not my computer?

Most computers do not have the orientation sensors used by mobile compass applications.

Does the website collect my location?

The compass feature uses orientation data supplied by the device. It does not require an account; consult the privacy policy for site-wide data practices.

Is this suitable for surveying?

No. Professional surveying requires calibrated instruments and appropriate procedures.

Feature review: Direction labels, permission guidance and limitations reviewed September 23, 2026.