--- title: "MPH to KPH Converter — Chart & Live Calculator" description: "Convert mph to km/h instantly with a live two-way calculator, plus a full mph-to-kph chart from 5 to 300 mph. Free, no sign-up." source: "https://speedometer.app/mph-to-kph/" image: "https://speedometer.app/og_image.webp" --- # MPH to KPH Converter Type a speed in either box for an instant, two-way conversion between miles per hour (mph) and kilometres per hour (km/h). Below the calculator you'll find a full mph-to-kph chart for the common values. Miles per hour (mph) \= Kilometres per hour (km/h) Exact definition: 1 mph = 1.609344 km/h; 1 km/h ≈ 0.621371 mph. Editing either field updates the other, rounded to two decimal places. [Use the live GPS speedometer](/online-speedometer/) for a GPS-based speed estimate while moving. It shows one selected unit at a time: switch between mph, km/h and knots. Location permission and usable location data are required. [![Download on the App Store](/_image/?href=%2F_astro%2FDownload_on_the_App_Store_Badge_US-UK_RGB_blk_092917.CVyK0T4N.svg&w=192&h=64&f=svg)](https://apps.apple.com/app/apple-store/id901574501?pt=100782816&ct=web.speedometer.app.converter&mt=8) ## MPH to KPH Chart Common speeds from 5 to 300 mph, converted both directions. Read left-to-right for mph → km/h, or use the right pair for km/h → mph. | mph | → km/h | km/h | → mph | | --- | --- | --- | --- | | 5 mph | 8 km/h | 5 km/h | 3.1 mph | | 10 mph | 16.1 km/h | 10 km/h | 6.2 mph | | 15 mph | 24.1 km/h | 15 km/h | 9.3 mph | | 20 mph | 32.2 km/h | 20 km/h | 12.4 mph | | 25 mph | 40.2 km/h | 25 km/h | 15.5 mph | | 30 mph | 48.3 km/h | 30 km/h | 18.6 mph | | 40 mph | 64.4 km/h | 40 km/h | 24.9 mph | | 50 mph | 80.5 km/h | 50 km/h | 31.1 mph | | 60 mph | 96.6 km/h | 60 km/h | 37.3 mph | | 70 mph | 112.7 km/h | 70 km/h | 43.5 mph | | 80 mph | 128.7 km/h | 80 km/h | 49.7 mph | | 90 mph | 144.8 km/h | 90 km/h | 55.9 mph | | 100 mph | 160.9 km/h | 100 km/h | 62.1 mph | | 110 mph | 177 km/h | 110 km/h | 68.4 mph | | 120 mph | 193.1 km/h | 120 km/h | 74.6 mph | | 130 mph | 209.2 km/h | 130 km/h | 80.8 mph | | 140 mph | 225.3 km/h | 140 km/h | 87 mph | | 160 mph | 257.5 km/h | 160 km/h | 99.4 mph | | 180 mph | 289.7 km/h | 180 km/h | 111.8 mph | | 200 mph | 321.9 km/h | 200 km/h | 124.3 mph | | 220 mph | 354.1 km/h | 220 km/h | 136.7 mph | | 240 mph | 386.2 km/h | 240 km/h | 149.1 mph | | 260 mph | 418.4 km/h | 260 km/h | 161.6 mph | | 280 mph | 450.6 km/h | 280 km/h | 174 mph | | 300 mph | 482.8 km/h | 300 km/h | 186.4 mph | Table values are rounded to one decimal place. The calculation uses 1 mph = 1.609344 km/h exactly; 0.621371 is a rounded reciprocal. ## How to convert miles per hour to kilometers per hour To convert **mph to kph**, multiply the speed by **1.609344**. This factor is exact: 1 mile = 1.609344 kilometres. Divide by the same factor to reverse the conversion. The reciprocal, approximately 0.621371, is rounded when written here; the calculator rounds only the displayed result. The unit matters as much as the number. **60 mph ≈ 96.6 km/h**, while 60 km/h ≈ 37.3 mph. These are different speeds despite the matching starting number. Check the input unit and conversion direction before comparing values from a chart, a device or a journey record. Useful numerical reference points: **30 mph ≈ 48.3 km/h**; **50 mph ≈ 80.5 km/h**; **70 mph ≈ 112.7 km/h**; **80 mph ≈ 128.7 km/h**. Each result is rounded to one decimal place. Enter another value in the converter to see the same relationship at a different speed. The spellings “kph”, “kmph” and “km/h” refer to kilometres per hour; km/h is the standard notation. A **mph to kph chart** changes the unit of a number, not the quality of its measurement. A dashboard and a GPS device can still disagree because calibration, reception and measurement methods differ. ![The Units & Display section of the app settings, with the speed-unit picker showing KM/H selected next to MPH and KN options.](/images/photos/settings/units-display.webp) Skip the mental maths: set GPS Speedometer to mph, km/h, or knots in Settings → Units & Display and read your speed directly. ## When you need to convert while you're driving A chart is ideal when you're planning ahead. The hard part is doing it in motion: you've collected a **rental car abroad** whose dashboard reads in km/h while every instinct you have is in mph — or you've taken a US-spec car onto a metric motorway. Multiplying by 1.6 at 70 mph is exactly the moment you shouldn't be looking away from the road. The same friction appears with an **imported car** whose speedometer only shows its origin market's units, and on the water, where a **boat's instruments** often read in knots while the posted limit is in mph or km/h. In each case the fix isn't a lookup table — it's a display that already shows the unit you think in. The [free live GPS speedometer](/online-speedometer/) runs without an app installation and shows a GPS-based speed estimate in your selected unit. Its reading depends on location permission and usable position data. The [MPH speedometer app](/mph-speedometer/) offers a large readout and a basic windshield HUD. Enhanced HUD features and Picture-in-Picture require PRO; the display is not a guarantee of measurement accuracy or continuous availability. [![Download on the App Store](/_image/?href=%2F_astro%2FDownload_on_the_App_Store_Badge_US-UK_RGB_blk_092917.CVyK0T4N.svg&w=192&h=64&f=svg)](https://apps.apple.com/app/apple-store/id901574501?pt=100782816&ct=web.speedometer.app.converter&mt=8)[Explore the MPH speedometer →](/mph-speedometer/) Converting the other way? Use the [KPH to MPH converter](/kph-to-mph/) — same live calculator and chart, km/h → mph. Working with nautical speeds? Use the [knots to mph converter](/knots-to-mph/), which also shows km/h. ## MPH to KPH — frequently asked ### How do you convert mph to kph? To convert mph to kph, multiply the speed by 1.609344. This factor is exact: 1 mile = 1.609344 kilometres. Divide by the same factor to reverse the conversion. The reciprocal, approximately 0.621371, is rounded when written here; the calculator rounds only the displayed result. ### What is 60 mph in km/h? 60 mph × 1.609344 ≈ 96.6 km/h. Rounded to one decimal place. This is a unit conversion, not a road-limit recommendation. ### What is 70 mph in kph? 70 mph × 1.609344 ≈ 112.7 km/h. Rounded to one decimal place. This is a unit conversion, not a road-limit recommendation. ### Is kph the same as km/h? Yes. "kph", "km/h", "kmh" and "kilometers per hour" all describe the same unit. The official written form is km/h; kph is common shorthand you'll see on dashboards and in search boxes. ## Stop converting in your head View a GPS speed estimate in your choice of mph, km/h or knots on your phone. ![Speedometer App QR Code](/_image/?href=%2F_astro%2Fqr-code.31-RE7kI.png&w=640&h=640&q=85&f=webp) [![Download on the App Store](/_image/?href=%2F_astro%2FDownload_on_the_App_Store_Badge_US-UK_RGB_blk_092917.CVyK0T4N.svg&w=192&h=64&f=svg)](https://apps.apple.com/app/apple-store/id901574501?pt=100782816&ct=web.speedometer.app.converter&mt=8) Free on the App Store. No sign-up.