How GPS Works (In Simple English)
Have you ever wondered how your phone knows exactly where you are? It's actually thanks to a fleet of satellites floating in space.
Before We Begin...
If you are currently trying to fix a coordinate error or convert a location, you should use our free tool first.
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Open Coordinate ConverterWhy This Matters
Understanding how GPS works helps you troubleshoot when your maps app puts you on the wrong street.
The Real-World Impact
Delivery drivers, emergency responders, and airplane pilots all rely on the exact same network of 31 satellites orbiting the Earth.
Common Mistake
Thinking GPS requires internet or cell service. Your phone's GPS chip receives signals directly from space, which is why it works in the middle of the ocean!
Dive Deeper (Semantic Topics)
Warning: Verify Your Calculation
Coordinate accuracy varies by device and datum. Do not use these results for legal or construction purposes without checking:
GPS Accuracy Alert
Your phone's GPS can be off by 30 meters. This can cause critical errors in your data.
Check My Accuracy →Datum Shift Risk
Using the wrong coordinate system (e.g. WGS84 vs NAD83) creates a permanent 1-meter offset.
Verify My Datum →