Home/FAQ/Display ModesDisplay Modes & UnitsWhat units does the speedometer support?Speedometer supports km/h, mph, and knots. You can change units anytime in the app settings.Try Speedometer free on iPhoneGPS speed, route recording, fuel tracking — all on-device.Download on theApp StoreRelated questionsDoes Speedometer support HUD (windshield) mode?Is Speedometer free to use?How accurate is the iPhone GPS speedometer?Does Speedometer work without internet?← All QuestionsMore on Display Modes