Speed
Convert speed units and calculate running pace from a target finish time.
Running Pace Calculator
Calculate your running pace in min/km, average speed and split times from a target finish time. Choose 5K, 10K, half marathon, marathon or a custom distance.
Open calculatorKilometers per hour to Miles per hour Converter
Convert kilometers per hour to miles per hour. Road signs and vehicle speedometers may use km/h or mph depending on the country.
Open calculatorMiles per hour to Kilometers per hour Converter
Convert miles per hour to kilometers per hour. Road signs and vehicle speedometers may use km/h or mph depending on the country.
Open calculatorMeters per second to Kilometers per hour Converter
Convert meters per second to kilometers per hour. Meters per second appear in physics and wind data; km/h can be easier to read for everyday travel.
Open calculatorKilometers per hour to Meters per second Converter
Convert kilometers per hour to meters per second. Meters per second appear in physics and wind data; km/h can be easier to read for everyday travel.
Open calculatorKnots to Kilometers per hour Converter
Convert knots to kilometers per hour. Knots are used for boat and aircraft speeds; km/h makes the same speed easier to compare with road travel.
Open calculatorKilometers per hour to Knots Converter
Convert kilometers per hour to knots. Knots are used for boat and aircraft speeds; km/h makes the same speed easier to compare with road travel.
Open calculatorConvert speed units and calculate running pace from a target finish time.
Speed conversions are useful for driving, sport and technical specifications because kilometres per hour and miles per hour describe the same motion on different scales.
Keep the time basis in view: speed, pace and travel duration are related but answer different questions.