As of 2026, the angular difference between magnetic north and true north (magnetic declination) varies by location, typically ranging from 0° to 20° east or west of true north, with extreme values up to 30° in some regions.
How many degrees off is magnetic north from true north?
Magnetic declination varies by location and time, typically ranging from 0° to 20° east or west of true north, with some regions experiencing up to 30° of deviation.
Take Anchorage, Alaska—right now, it’s about 14° east. Meanwhile, New York City sits at roughly 13° west. The difference isn’t static either; Earth’s magnetic field shifts constantly, so declination changes over time. Want the exact number for where you are? Plug your coordinates into the NOAA Magnetic Field Calculators—they’ve got the most up-to-date data.
How far is north from magnetic north?
The Geographic North Pole is about 1,200 miles (1,930 kilometers) from the Magnetic North Pole, which is currently located near 86.50°N, 164.04°E as of 2026.
That gap isn’t fixed, though. The Magnetic North Pole isn’t just wandering aimlessly—it’s moving fast. Right now, it’s drifting from Canada toward Siberia at about 25–35 miles per year. (Honestly, this is one of the faster-moving features on Earth.) For anyone relying on compasses—pilots, hikers, sailors—this movement matters. It throws off readings if you don’t adjust for it.
Is there a difference between true north and magnetic north?
Yes, true north refers to the fixed geographic North Pole, while magnetic north is the dynamic point where Earth’s magnetic field points vertically downward.
Picture it this way: true north is like a permanent landmark on a map. Magnetic north? It’s more like a moving target. The angle between them—magnetic declination—shifts depending on where you stand. That’s why your compass doesn’t always point straight up on a map. Navigators have to account for this difference, or they’ll end up off course.
How do you convert true north to magnetic north?
To convert from true north to magnetic north, add or subtract the local magnetic declination, which is the angle between true north and magnetic north at your location.
Here’s the trick: if your declination is west, subtract it. If it’s east, add it. Say your declination is 10° west—you’d take a true bearing of 90° and turn it into a magnetic bearing of 80°. Most topographic maps include a little diagram showing the local declination. Keep it handy. Your compass won’t lie to you, but Earth’s magnetic field sure does.
Does GPS use true north or magnetic north?
GPS systems natively use true north, as they rely on satellite signals to determine geographic coordinates.
GPS doesn’t care about magnetic fields. It locks onto satellites and calculates your position based on true north. That said, many GPS devices can fake a magnetic heading by applying declination data. Handy for hikers who like their compass-style bearings. Just remember: if your GPS loses satellite signal, it’s suddenly as useless as a chocolate teapot.
Do surveyors use true north or magnetic north?
Surveyors primarily use true north for precise mapping and land measurements, but may account for magnetic declination when using compasses for preliminary work.
Modern surveying equipment—GPS, theodolites, laser scanners—relies on true north. It’s non-negotiable for legal boundaries and construction layouts. But old-school compasses? Still used for quick checks. Surveyors just adjust for declination first. Otherwise, you’d measure a property line and end up in your neighbor’s garden.
Does magnetic north change?
Yes, magnetic north shifts continuously due to changes in Earth’s molten outer core.
It’s not just drifting—it’s accelerating. The NOAA National Centers for Environmental Information tracks this movement using models like the World Magnetic Model. Right now, the pole is racing toward Siberia at 25–35 miles a year. That’s faster than most tectonic plates move. These shifts aren’t just academic—they affect everything from smartphone compasses to airport runway names.
Do maps use true north?
Yes, all standard maps are oriented with true north at the top of the map.
It’s the one thing cartographers agree on. Whether it’s a road atlas or a USGS topographic map, true north sits at the top. That way, north is always up. But here’s the catch: your compass points to magnetic north, which might not line up. That’s why good maps include a declination diagram—so you can adjust your compass and not walk into a lake by accident.
Where is magnetic north now?
As of 2026, the Magnetic North Pole is located at approximately 86.50°N, 164.04°E, north of Canada in the Arctic Ocean.
It’s not on solid ground—it’s floating in the Arctic Ocean. The British Geological Survey and NOAA update this position regularly using the World Magnetic Model. Want the freshest coordinates? Check the latest WMM data. Just don’t expect it to stay put.
Why does a compass needle always point to magnetic north?
A compass needle aligns with Earth’s magnetic field, which emerges from the magnetic south pole near the geographic North Pole and re-enters near the magnetic north pole.
It’s basic physics: opposite poles attract. The north end of your compass needle is actually a magnetic north pole, which gets pulled toward Earth’s magnetic south pole near the geographic North Pole. That’s why it always points “north”—even though it’s technically heading toward a magnetic south. Confusing? Absolutely. Reliable? Surprisingly, yes.
How do I set my compass to true north?
Set your compass to true north by adjusting its declination based on your location’s magnetic declination value.
Start by finding your local declination—NOAA’s calculators are great for this. Got a manual compass? Turn the bezel to match the declination angle (e.g., 10° west). Now, when you follow the needle, it’ll align with true north. For digital compasses, just enable “Use True North” in settings. Pro tip: recalibrate after adjusting. A misaligned compass is worse than no compass at all.
How do you calculate true north?
Align your compass with the magnetic declination for your location to calculate true north.
Turn your compass bezel by the declination angle—say, 15° east. Then, rotate your whole body until the needle sits over the orienting arrow. Now you’re facing true north. Works best with a solid orienteering compass. Digital users? Flip on “True North” mode in your GPS app. Just don’t try this in a dense forest—trees mess with compasses.
Should I set my compass to true north?
Set your compass to true north if you are using a map for navigation or require high precision.
True north lines up with your map’s grid. Magnetic north? Not so much. If you’re navigating with a topo map, you need true north. Otherwise, you’ll end up walking in circles. That said, magnetic north is fine for quick bearings—just adjust for declination first. Think of it like this: true north is for precision, magnetic north is for “good enough.”
Is GPS heading true or magnetic?
GPS systems measure heading in true coordinates by default.
GPS doesn’t use magnetic fields at all. It tracks your movement via satellites and calculates direction based on true north. But many GPS units can display magnetic heading too—handy for pilots or sailors who prefer compass-style navigation. The catch? GPS needs a clear view of the sky. Lose the signal, and your heading vanishes faster than a Wi-Fi connection in a basement.
Does iPhone compass use magnetic north?
The iPhone compass defaults to magnetic north, but you can switch to true north in settings.
To make the switch, go to Settings > Compass > Use True North. The iPhone uses its magnetometer and GPS to figure out direction. Calibrate it by waving the phone in a loose figure-eight—this helps the sensors lock on. Why bother? If you’re using a paper map, true north mode keeps your phone’s direction aligned with the map’s grid. Otherwise, you’ll be off by a few degrees. Not ideal when you’re trying to find a trailhead.
