Vehicle Speed Test
Check Your Vehicle Speed
Turn your phone into a precise GPS speedometer in seconds. Measure the real-time speed of any vehicle you are travelling in — car, bike, bus, train, metro, or even your own running pace.
Pick your vehicle
Each mode is pre-tuned with a sensible speed range and display defaults, so the readout fits the kind of journey you're on.
Real GPS readings
Speed is calculated from your phone's GPS chip — the same data your maps app uses for turn-by-turn navigation.
Works on any device
No app install, no signup. Open the page on your phone or tablet, allow location, and you're done.
Live, smoothed display
A big digital readout, an analog dial, and a minimal mode — pick whichever feels most natural for your trip.
Private by design
Your location never leaves your device. There is no server, no tracking, and no account — just a browser tab.
Top speed + average
Watch the dial in real time, then check your peak and average speeds for the whole trip.
km/h, mph, knots, m/s
Switch units with one tap. Perfect for road trips abroad, cycling logs, sailing, and physics class.
How GPS speed measurement works
A GPS receiver on your phone listens to signals from at least four satellites in orbit. From the time differences between those signals, the chip works out a 3D position — latitude, longitude, and altitude — several times every second. By comparing two consecutive positions and dividing the distance by the time between them, the phone can calculate your speed over ground extremely accurately, completely independently of any wheel sensors or speedometer cables.
GPS speed vs. car speedometer
In most countries, regulations require vehicle speedometers to read slightly higher than the actual speed — never lower. That means a dashboard reading of 100 km/h might actually be 92–98 km/h on the road. A GPS-based reading like the one above is normally much closer to the truth.
Why your phone is enough
Modern phones contain dedicated GPS chips that update around once a second and report position accuracy down to a few metres outdoors. That is more than enough resolution to give you a stable, useful speed reading without any external hardware.
Best practices for an accurate reading
- Place your phone where it can see the sky — near a window or on the dashboard, not buried in a bag.
- Wait 10–20 seconds after starting the test for the GPS to get a stable fix.
- Avoid tunnels, underground stations, and dense urban canyons where GPS reception is weak.
- For long trips, plug your phone into a charger — continuous GPS use will drain the battery faster than normal.
- Re-open the page after switching to a new vehicle so the trip stats reset cleanly.
Typical speeds by vehicle
| Vehicle | City | Highway / Cruise | Top range |
|---|---|---|---|
| Car | 30–60 km/h | 90–130 km/h | 180–250 km/h |
| Bike (bicycle) | 15–25 km/h | 25–35 km/h | 50–80 km/h (downhill) |
| Bus | 20–40 km/h | 70–100 km/h | 100–120 km/h |
| Train | n/a | 100–160 km/h | 250–350 km/h (high-speed) |
| Metro / Subway | 30–60 km/h | n/a | 80–100 km/h |
| Running | 8–12 km/h | 12–20 km/h | 25–30 km/h (sprint) |
Frequently Asked Questions
Explore vehicle-specific modes
Pick the mode that matches your journey — every page is tuned for the kind of speeds you'll see in that vehicle.
Car Speed Test
Use your phone as a GPS speedometer in a car. Compare your readings against the dashboard cluster.
Bike Speed Test
Track your cycling speed on rides, commutes, or trail sessions with a smooth GPS-based readout.
Bus Speed Test
Curious how fast your bus is going? Track its live GPS speed from your seat without any extra hardware.
Train Speed Test
Check how fast your train is travelling in real time. Works on local, intercity, and high-speed rail journeys.
Metro Speed Test
Test metro and subway train speeds using GPS. The reading locks on whenever the line runs above ground.
Running Speed Test
Measure your running pace and speed without a smartwatch. Great for jogs, sprints, and outdoor workouts.
Browse every vehicle mode we support