GPS Speedometer

A live GPS speedometer that shows your current speed as an analog gauge and digital readout. Tracks max speed, average speed, distance travelled, and elapsed time for your journey. Works in any modern browser with location permission.

Controls

0 km/h
Tap Start to begin

Session stats

— Max speed
— Avg speed
— Distance
— Elapsed time
— GPS accuracy
— Heading

Using the GPS Speedometer

Tap Start and grant location permission when prompted. Once the GPS signal is acquired you will see your live speed on the dial. The gauge colour changes as you accelerate — green (0–60 km/h), amber (60–100 km/h), and red (100+ km/h).

Tips for best accuracy

  • Use on a phone or tablet with a dedicated GPS chip, not a desktop PC.
  • Mount the device with a clear view of the sky for the strongest signal.
  • Allow a few seconds after pressing Start for the GPS to warm up — the first reading may show 0.
  • Enable "Keep screen awake" so the display stays on while you drive.

Privacy

All calculations happen locally in your browser. No position data, speed, or route information is transmitted anywhere. The location permission is used solely for reading the GPS speed from your device.

Frequently Asked Questions

The GPS Speedometer uses your device's built-in GPS or location services to measure your speed. Your location data is processed entirely in your browser — nothing is sent to any server. You can revoke permission at any time through your browser settings.

GPS-derived speed is typically accurate to within 0.1–0.5 km/h at steady speeds on open roads. Accuracy drops in tunnels, dense urban canyons, and bad weather. The GPS accuracy indicator (in metres) gives you a live confidence reading — lower is better.

Desktop computers and some laptops don't have GPS hardware. In that case the browser falls back to Wi-Fi or IP-based positioning, which cannot provide reliable speed. Use the tool on a phone or tablet with GPS. Also, standing still will legitimately show 0 km/h.

GPS signals are blocked by buildings and tunnels. When you lose the signal the display will show the last known speed and the status will change to "GPS weak". Cellular-assisted GPS (A-GPS) on phones recovers more quickly once you re-emerge.

Using GPS with high accuracy mode does increase battery consumption — roughly equivalent to using Google Maps for navigation. If you enable the screen wake lock, the display stays on while tracking, which also uses battery. Consider keeping your phone plugged in while driving.

Enable the "Keep screen awake" toggle before starting tracking. This uses the Screen Wake Lock API, supported in Chrome, Edge, and most Android browsers. It is not available in Firefox or Safari as of 2025. If your browser does not support it, the toggle will be hidden automatically.