Online Compass - Free Digital Compass Tool

Digital Compass

How to Use This Compass

1. Enable access: Tap the button above and allow sensor permissions when prompted
2. Hold device flat: Keep your phone horizontal, parallel to the ground
3. Face forward: The top of your phone points in your direction of travel
4. Read the heading: The red needle points North; your heading is shown in degrees

Tips for Accurate Readings

• Move away from metal objects, magnets, and electronics
• If readings seem wrong, calibrate by moving your phone in a figure-8 pattern
• Some device cases with magnetic closures can interfere with readings
• Indoor readings may be less accurate due to metal in building structures

Cardinal Directions Reference

About Digital Compasses

This online compass uses the magnetometer (magnetic field sensor) built into most modern smartphones and tablets. The magnetometer detects Earth's magnetic field to determine which direction is magnetic north.

Magnetic vs True North

This compass shows magnetic north, which differs from true geographic north by an amount called magnetic declination. The difference varies by location (from a few degrees to over 20° in some regions). For casual navigation, this difference is usually negligible, but for precise orienteering, you may need to adjust for your local declination.

When a Compass is Useful

• Navigation: Finding your way when hiking, camping, or exploring
• Photography: Positioning for sunrise/sunset shots or star photography
• Feng Shui: Determining room orientations
• Solar panels: Optimal panel facing direction
• Satellite dishes: Pointing toward satellites
• General curiosity: Knowing which way you're facing

Frequently Asked Questions

Why isn't the compass working?

Your device needs a magnetometer sensor. Most smartphones have one, but some tablets and older devices may not. Also ensure you've granted sensor permissions in your browser.

Why is my compass inaccurate?

Nearby magnetic or metal objects can interfere with readings. Try moving away from electronics, speakers, or metal furniture. Calibrating by waving your device in a figure-8 motion can help.

Does this work indoors?

Yes, but accuracy may be reduced due to metal in building structures, electrical wiring, and electronic devices. For best results, use outdoors away from vehicles and buildings.

How accurate is a phone compass?

Under good conditions, smartphone compasses are typically accurate to within 5-10 degrees. After proper calibration and away from interference, accuracy can improve to 1-5 degrees.

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Online Compass FAQ