Bus Speed Test
Live GPS speedometer · No app install · 100% free

Bus Speed Test

How fast is your bus actually going? Tap Start Measuringand your phone's GPS becomes a live digital speedometer — perfect for buses, trains, cars, bikes, or just measuring your walking pace.

Bus Speed Test
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1

Open on your phone

The site works on any modern mobile browser — no install needed.

2

Allow GPS access

Tap Start and approve the location permission prompt when your browser asks.

3

Watch your speed

The dial updates live with your speed, distance traveled, and top speed.

What Bus Speed Test Does

Bus Speed Test is a browser-based GPS speedometer designed to be opened on your phone while you're a passenger. It uses the same satellite signals your maps app uses to calculate how fast you're moving, then displays the result on a customizable dial. Because it runs in your browser, there's nothing to download — just open the site, allow location, and go.

Works in any browser

Chrome, Safari, Firefox, Edge — anywhere geolocation is supported. No download required.

Private by design

Your GPS data stays on your phone. Nothing is logged, uploaded, or shared.

Real-time updates

The dial refreshes every second your phone receives a new GPS fix.

No data plan needed

GPS itself is satellite-based. Once the page loads, you can ride into tunnels and still get speed.

Light & dark theme

Auto-matches your system theme, with a one-tap toggle in the header.

Easy on the battery

Stop tracking between checks to save power on long journeys.

Make It Yours

Tap the settings icon on the speedometer to switch between units, display styles, and accent colors. Your preferences are saved automatically.

Four speed units

  • Kilometers per hour (km/h)
  • Miles per hour (mph)
  • Meters per second (m/s)
  • Knots (kn)

Three display styles

  • Classic — analog dial with sweeping needle
  • Minimal — huge digital readout, no clutter
  • Digital — vintage LCD with glowing segments

Five accent colors

  • Amber (default)
  • Cyan
  • Emerald
  • Rose
  • Violet

Smart options

  • Adjustable max scale
  • Optional smoothing filter
  • Fullscreen view
  • Auto-saved preferences

How Accurate Is It?

Modern smartphones use a combination of GPS, GLONASS, and other satellite systems to pin down your position to within a few meters. When you're moving steadily — like a bus on a highway — your speed reading will typically be within ±2 km/h of the actual ground speed.

Accuracy can drop briefly when the bus passes under bridges, into tunnels, or between tall buildings that block the sky. The dial will recover within a few seconds once a clear view of the sky returns.

Frequently Asked Questions

No. Bus Speed Test runs entirely in your browser. Open the page, tap Start, and allow location access — that's it.
You need internet to load the page the first time. Once it's loaded, GPS itself works without a data connection, so the speedometer keeps updating even in tunnels with cell coverage gaps (as long as you don't reload the tab).
No. All GPS readings stay on your device. The site does not log, store, or transmit your location to any server.
Tiny GPS drift can show as 1–3 km/h even when stationary. Enabling Smoothing in settings averages the last 5 readings, which damps out most of the jitter.
Yes. As long as the device can see GPS satellites (window seat helps), it will measure speed for any vehicle — trains, ferries, even small aircraft. Note that GPS is disabled in airplane mode.
GPS is moderately power-hungry. Expect noticeable battery drain over long trips. You can keep your phone plugged in, or stop the tracker between checks.
Desktops and laptops usually don't have GPS hardware, so browser geolocation falls back to Wi-Fi triangulation, which doesn't give a speed value. Open the site on your phone for real speed readings.
Yes. Open the settings (gear icon at the top of the speedometer), and pick mph, km/h, m/s, or knots. Your choice is remembered.

Ready when you are

Scroll back to the top, hit Start, and watch your bus speed in real time. Bookmark the page so it's one tap away on your next ride.

Back to the speedometer