Digital Speedometer — Turn Your Phone Into One Now
speedometer.app turns your phone into a digital speedometer right in your browser — allow location, start moving, and your exact GPS speed appears as a large digital readout in mph, km/h or knots. It is free, needs no download or sign-up, and your location never leaves your device.
Tap to start · allow location to see your speed
Open this on your phone
A GPS speedometer needs your phone's GPS — most desktops and laptops don't have one. Open this page on your phone, or get the app:
Your location is processed on your device to calculate speed — it never leaves your phone and is never sent to a server.
A digital speedometer that runs in your browser
The tool above is the digital speedometer — there is nothing to install. It reads your phone's GPS and shows your real speed as a large, glanceable number instead of a needle on a dial. Because the reading comes from GPS rather than your car, it works on anything that moves: a car, a motorcycle, a bike, a boat, or a train. Tap once to allow location, start moving, and the number updates live. Prefer the classic look? The same engine powers the live dial speedometer — switch whenever you like.
A digital readout has one real advantage over a dial: you read an exact figure in a fraction of a second, with no interpolating between tick marks. Switch between mph, km/h and knots with the buttons under the display, and the tool remembers your choice. It also tracks your maximum speed for the session, so you can glance back after a stretch of road or water. Everything happens on your device — your location is used only to calculate speed and is never sent anywhere. It is genuinely free, with no account and no ads.
Bigger digital display options in the app
The browser tool is perfect for a quick check or a phone you're holding. For a permanent in-car or on-bike setup, the free Speedometer app for iPhone gives you a larger, more configurable speed display. You can pick from several themes to suit day or night driving, flip on HUD (heads-up) mode so the number reflects up onto your windshield after dark, and keep the speed visible in Picture-in-Picture while you navigate in another app. Every trip logs distance, average and top speed so you have a record afterwards.
Whichever you use, the number on screen is your true GPS speed. If your factory speedometer reads a little fast — most do, by design — the digital GPS figure is a useful second opinion on how quickly you're actually travelling.
Get the free Speedometer app on the App Store — no sign-up, and the core speedometer costs nothing.
"Digital speedometer cluster" and gauge replacements
Let's be straight about the searches that bring people here. A lot of "digital speedometer" and "digital speedometer cluster" queries are about hardware — a physical instrument panel from AutoMeter, Dakota Digital or Intellitronix that gets wired into a car's dashboard. We don't sell those, and a phone can't become the gauge cluster bolted into your dash.
What a phone app can honestly do is stand in for a speed readout when the built-in one has failed or was never there. If your speedometer is broken, a GPS digital speedometer gives you an accurate number today, for the price of nothing, while you decide whether to repair the cluster. The same is true on a motorcycle with a dead gauge, or a classic car that never had a modern display. Mounted where you can see it, the phone is a legitimate temporary — or long-term — replacement for the reading, even though it isn't the physical instrument. Our broken speedometer replacement guide covers mounting, GPS lock and the accuracy caveats in detail.
One common, honest use of the phone-as-display idea: a car whose cluster shows speed only on an analog dial — a Dodge Charger trim without a digital MPH readout, for example — where the driver wants a big digital number too. Here the phone isn't replacing anything; it's a secondary digital display mounted on the dash, showing GPS speed as a clean numeric readout alongside the original gauges. That's exactly what the tool above does.
Digital speedometer — frequently asked
How do I turn my phone into a digital speedometer?
Open this page on your phone, tap to allow location, and start moving. speedometer.app reads your GPS speed and shows it as a big digital number in mph, km/h or knots — no app install and no sign-up. For an always-on in-car setup, the free iOS app adds a windshield HUD mode and Picture-in-Picture.
Is a GPS digital speedometer accurate?
Yes — GPS measures your true speed over the ground, which is often more accurate than a car's built-in speedometer (factory speedometers usually read a few percent high). Accuracy depends on GPS signal, so it is best outdoors with a clear view of the sky.
Can a phone replace a digital speedometer cluster?
A phone cannot replace the physical instrument cluster wired into your car, but it is a genuine stand-in when the cluster's speed readout is dead or missing. A GPS digital speedometer works on any vehicle — including motorcycles and classic cars — because it needs no connection to the car. See our broken-speedometer guide for how to mount and use it.
Does the digital speedometer work without internet?
Yes. Speed is calculated from your device's GPS, not from the network, so once the page is open it keeps working with no signal — on remote roads, in tunnels between towers, or on the water.
What is a digital speedometer?
A digital speedometer shows your speed as a numeric readout — "62" — instead of a needle sweeping a dial. Many drivers find the number faster to read at a glance. This tool gives you a digital display on any phone using GPS.
Prefer a needle? Use the live dial speedometer — same GPS engine, classic gauge. Want a permanent in-car readout in miles per hour? See the MPH speedometer app.
A bigger digital speedometer, always on
Get the free app for a large digital readout, HUD windshield mode and Picture-in-Picture.
Free on the App Store. No sign-up.