GPS Speedometer Live — Real-Time Speed Using Your Device GPS
Turn your phone or laptop into a real GPS speedometer. Uses your device's built-in GPS to show your current speed in mph, km/h, knots, or m/s. No app install required.
Live GPS Speedometer
Allow location access when prompted. Your data stays on your device.
How the GPS Speedometer Works
The GPS Speedometer uses your device's built-in GPS receiver to calculate your current speed in real time. Every modern smartphone and most laptops have GPS capabilities that your browser can access through the Geolocation API. When you open this page and grant location permission, the speedometer begins tracking your movement instantly.
How Accurate Is GPS Speed?
GPS speed is typically more accurate than a car's speedometer. Consumer GPS devices have an accuracy of about ±0.2 m/s (±0.45 mph) under open sky. Unlike your vehicle's speedometer (which can read 5-10% high due to tire wear and manufacturing tolerances), GPS speed is direct measurement based on the Doppler shift of satellite signals.
Supported Units
- Miles per hour (mph) — Used in the US and UK for road speed.
- Kilometers per hour (km/h) — Used in most countries worldwide.
- Knots — Used in aviation and maritime navigation.
- Meters per second (m/s) — The SI unit, used in science and engineering.
Tips for Best Accuracy
- Use your device outdoors with a clear view of the sky.
- Keep your device facing up for optimal satellite reception.
- Move at a steady speed — GPS speed readings stabilize faster at higher speeds.
- Close other apps using GPS to reduce battery drain.
Use Cases
A GPS speedometer is useful in many situations. Cyclists can check their speed without buying a bike computer. Runners and joggers can track their pace. Drivers can verify their car speedometer accuracy. Boaters and sailors can get instant speed readings without installing marine electronics. Pilots can use it as a backup airspeed indicator.
The GPS speedometer works on any device with a GPS receiver — iPhones, Android phones, tablets, and laptops with GPS. It works in any vehicle: car, bike, boat, train, or plane. Since it runs entirely in your browser, there is no app to install and no data leaves your device.
Privacy
Your location data is processed entirely on your device. We do not send GPS coordinates or speed data to any server. You can verify this by disconnecting from the internet after the page loads — the speedometer continues working. No data is stored, logged, or shared.
Speed Conversion
Need to convert speeds between different units? Try ourspeed conversion tool for instant conversions between mph, km/h, knots, and m/s.
GPS Speedometer FAQs
Does this GPS speedometer work on iPhone and Android?
Yes, it works on all modern smartphones and tablets with GPS capability, including iPhone, iPad, Android phones and tablets.
Do I need to install an app?
No. This GPS speedometer runs entirely in your browser. No app store, no download, no installation required.
Why does the browser ask for location permission?
The GPS speedometer needs your location to calculate speed. The data stays on your device and is never sent to any server.
How accurate is the GPS speed reading?
GPS speed accuracy is typically ±0.2 m/s under open sky. It is often more accurate than a vehicle speedometer.
Can I use this while driving?
Yes, but for safety, do not operate your device while driving. Set up the speedometer before you start moving, or have a passenger handle it.
Does it work indoors?
GPS signals are weak indoors. For best results, use the speedometer outdoors with a clear view of the sky.
Does it drain the battery?
Using GPS does consume more battery than normal browsing. Close the page when not in use to save power.
Can I switch between mph and km/h?
Yes, you can switch between mph, km/h, knots, and m/s at any time using the dropdown menu below the speedometer.