wikiHow Calculating Average Speed Calculator To calculate the average speed of an object, you need to know the total distance traveled and the total time it took to travel that distance. You can use the following formula: Average speed = Total distance ÷ Total time Here are the steps to calculate the average speed: 1. Determine the total distance traveled by the object. 2. Determine the total time it took for the object to travel that distance. 3. Divide the total distance by the total time to get the average speed. For example, if a car travels 200 miles in 4 hours, the average speed would be: Average speed = 200 miles ÷ 4 hours Average speed = 50 miles per hour So the average speed of the car was 50 miles per hour. Page