Why is my accuracy 5 km on a desktop?

Desktops usually lack GPS and rely on Wi-Fi or IP-based location. Accuracy is limited to the density of Wi-Fi networks around you that the provider's database knows.

Why is altitude 'not available'?

Altitude only comes from GPS. Devices without GPS, or stationary GPS devices with poor vertical accuracy, return null.

Can CheckMySys see my coordinates?

No. The coordinates are read in JavaScript on this page and never sent to any server. Your browser may contact Google or Apple to compute the position from nearby Wi-Fi networks — that is a browser-internal request.

Geolocation

How the geolocation test works

Click Start — share location. Your browser will ask permission once; after that the tool uses navigator.geolocation.watchPositionto receive live updates. Readings come from whichever sources your device has available: GPS, Wi-Fi triangulation (SSIDs around you, resolved by Google or Apple's location service), or cellular cell-ID lookup.

Accuracy is reported as a radius in meters. A desktop without GPS usually sees 1,000–10,000 m (Wi-Fi or IP-based approximation). A mobile device with GPS fix sees 5–20 m outdoors.

Altitude, heading, and speedare only provided by GPS-capable devices that are actively moving. Most desktops and stationary phones will show "not available" for those.

Privacy: the coordinates shown here are read in JavaScript on this page. CheckMySys does not send them to any server. Your browser, on the other hand, may contact Google or Apple location services to compute the position from nearby Wi-Fi networks — that is a browser-internal request, not one you can see in DevTools.

Related tools

Request your browser's GPS position and see every value the Geolocation API returns — including altitude, heading, and speed.