Actionable tutorials, navigation field guides, and technical deep-dives into mobile sensors, geomagnetic declination, and reading compass headings online.
Opened Free Compass Online on your laptop or PC and wondering why the needle doesn't turn? Learn why desktop hardware lacks magnetometer sensors, and how to scan our built-in QR code to instantly navigate on your phone.
Learn how the sun and moon positions are calculated on a 360° compass dial. Discover how celestial azimuth and elevation help photographers, solar planners, stargazers, and hikers orient themselves.
Phone dead or out of battery on the trail? Learn 5 time-tested, practical ways to find North, South, East, and West using the sun, shadows, an analog wrist watch, the North Star, and nature's clues.
Most apps demand your GPS coordinates just to show a basic compass needle. Learn why Free Compass Online functions without mandatory location tracking and how your orientation sensors stay private.
Ever wondered how an online compass works without installing an app? Learn how web browsers read smartphone magnetometers, how it differs from physical and GPS compasses, and when to use one.
Learn how to accurately find your home facing direction, front entrance bearing, and window sunlight angles online using your smartphone browser without downloading apps.
Magnetic declination is the angle between where your compass points and where True North actually lies. Learn what causes it, how to look up your local value, and how to correct your bearings in the field.
Understand the crucial difference between Magnetic North and True North. Learn how magnetic declination works, why the magnetic pole moves 30-40 miles every year, how to calculate compass drift, and how to navigate accurately outdoors.
Explore the practical uses of an online compass—from outdoor hiking, orienteering, and solar panel alignment to stargazing, architecture, real estate daylighting, and religious Qibla direction.
Learn how to calibrate, read 360° headings, calculate True North vs Magnetic North with WMM2025 declination, and navigate using your browser on iPhone, Android, or laptop.
Test our zero-install online compass with True North compensation, real-time degrees, and spirit level balance.