GPS Speedometer
Turn your phone into a speedometer for a car, bike, cycle, run or train journey. It uses your phone’s GPS, and your location never leaves your device.
Your location never leaves your device. Keep this page open and the screen on; phones pause location updates for background tabs. Don’t use your phone while driving. Set it up before you start.
How to use the speedometer
- Press Start and allow location access.
- Keep the page open. Your speed, distance and trip time update every second.
- Set a speed alert or turn on HUD mode for night driving. Press Stop when you arrive.
Features
- Analog and digital speed display
- km/h, mph, m/s and knots
- Max speed, average speed, distance and trip time
- Over-speed alert with sound
- HUD windshield mode and full screen
- Keeps the screen awake while running
Frequently asked questions
How accurate is a GPS speedometer?
Outdoors with a clear view of the sky, phone GPS is usually accurate to within 1–2 km/h at steady speeds. It is often more accurate than a car’s speedometer, which normally reads a little high.
Why does it show 0 or no speed?
GPS needs a clear view of the sky. Indoors, in tunnels or between tall buildings the signal is weak. Laptops and desktops usually have no GPS and estimate location from Wi-Fi, so they can’t measure speed.
Does it work in a train or plane?
In a train, yes, near a window. In a plane, GPS often works next to the window, and speeds of several hundred km/h are shown.
Does it use mobile data or share my location?
No. GPS works without internet once the page is loaded, and your location is processed only in your browser. Nothing is sent or stored.
What is HUD mode?
HUD mode shows large mirrored numbers. Place the phone flat on the dashboard at night and the speed reflects on the windshield so you can read it without looking down.
Related tools
All Device & Network →- Online Compass Find north, east, south and west, check which way a door or plot faces, or find the Qibla direction, using your phone’s built-in compass sensor.
- Find My Location Get your exact GPS coordinates and address, share your location in a message, or check your IP address and approximate location.
- Fuel Cost Calculator Estimate how much fuel a trip needs and what it will cost, including tolls, and split it among travellers.
- Internet Speed Test Check how fast your Wi-Fi, broadband or mobile data really is.
- Bubble Level Check whether a surface is level or a frame is straight, using your phone’s motion sensor.
- Decibel Meter Check how loud a room, road, party or machine is.