What is my elevation?
See your current elevation (altitude) from your device's GPS, only after you allow it. Read privately in your browser, nothing uploaded.
Your browser will ask before sharing anything. Nothing is uploaded.
Your current elevation, your height above sea level, can be shown above once you allow location access. When you consent, your browser's Geolocation API returns an altitude value alongside your coordinates, where your device's GPS hardware provides one.
Altitude from consumer GPS is the least reliable part of a location fix. Horizontal position (latitude and longitude) is usually accurate to a few metres, but vertical altitude can be off by tens of metres, and many devices, especially laptops and desktops without a real GPS chip, return no altitude at all.
If nothing appears above after you allow location, your device simply did not supply an altitude. That is common on Wi-Fi-positioned machines. Phones outdoors with a clear sky view give the best readings.
What you should know
Why sites collect it
Elevation matters to hiking, cycling and aviation apps, weather and air-pressure tools, and mapping that needs a third dimension. Most everyday sites never request it.
Privacy implications
Elevation is derived from the same consented location fix as your coordinates, so it carries the same sensitivity, gated behind a permission prompt and never uploaded by this page. On its own an altitude figure is not very identifying.
How to change or hide it
Deny the location prompt to skip it, or revoke access afterwards. There is no separate altitude permission; it comes with location. Accuracy depends on your hardware, so treat the number as approximate.
Frequently asked questions
Why is my elevation blank or zero?
Your device did not report an altitude. That is normal on laptops and desktops positioned by Wi-Fi. A phone outdoors with GPS gives the best chance of a reading.
How accurate is browser elevation?
Less accurate than horizontal position. Consumer GPS altitude can be off by tens of metres, so use it as a rough guide, not a survey measurement.