![]() As usual, make sure that the time unit of the speed measure is the same as the time unit for the duration of the trip. The result will depend on the unit of the speed metric, for example if speed is given in mph, the result will be in miles, if it is given in km/h, the result will be in kilometers. Where v is the velocity (average speed), t is the time and d is distance, so you can read it as Distance = Speed x Time. The formula for distance, if you know time (duration) and the average speed, is: If you want the result in km/h, you can convert from miles to km to get 788.58 km/h. If it was in meters and seconds, it will be in m/s (meters per second).Įxample: If you took a plane from New York to Los Angeles and the flight was 5 hours of air time, what was the speed of the plane, given that the flight path was 2450 miles? The answer is 2450 / 5 = 490 mph (miles per hour) average speed. The resulting unit will depend on the units for both time and distance, so if your input was in miles and hours, the speed will be in mph. As noted above, make sure you convert the units appropriately first, or use our speed calculator which does that automatically. Where v is the velocity, d is the distance, and t is the time, so you can read it as Speed = Distance / Time. The formula for average speed, also called average velocity in physics and engineering, is: The unit of the result will depend on the units you input, but our speed calculator will conveniently display additional units where appropriate. If you have distance in kilometers, then speed should also be in km/h (kilometers per hour). For example, if you have speed in mph (miles per hour), time should also be in hours. miles, kilometers, meters, yards, feet, and hours, minutes or seconds. You will need to convert the metrics to the same time and distance units, e.g. In order to use the above speed, distance & time calculator, or do such math on your own, you will need to know two out of three metrics: speed, distance, time. How to calculate the average speed of a car?.You use the conversion calculator and get the number 9.12 fps.įun fact, top sprinter Usain Bolt can achieve speeds of 34.25 fps. You're training for a 5k, which is about three miles.Īfter estimating an average running pace of 6.22 miles/hour, you want to know how many feet you are covering in a second. You're measuring your agility in miles or kilometers, but you want to optimize your performance. ![]() Plug that into the conversion calculator and you'll know that you reached a pace of 15 miles/hour. Your Apple Watch estimates that you covered 660 feet, which means your speed was 22 feet per second (660 / 30 = 22). You measured your bike acceleration over 30 seconds. This can give you a better understanding of your bike pace. But you're able to measure your distance and estimate each second you rode your bike. Let's say you're riding your bike and are unsure of how fast you're going. Here are common reasons why you'll want to convert these measurements: Fps to Mph But why should we? For one of two reasons: Now you know a briefing of the measurements, we can focus on the conversion. The trend continued when trains became the main transportation method.įaster measurement units were required, and miles per hour was the easiest to translate. It was originally used to determine the agility of motor coaches. Mph as a speed measurement dates back to the 18th century.
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