Speed Calculator

Speed calculator is a tool that helps you determine average speed based on the distance and time travelled by a moving object. Whether it's a test drive of your brand new car, your last jogging run or bike trip, if you want to know how to find average speed, this calculator will come in handy.
Speed Calculator
In the article below, you can find many valuable pieces of information, like what is the average speed formula. We also write about curious speed facts (e.g., speed of sound). Check this speed distance calculator and answer the question "How fast am I going?"

Speed, Distance, Time

The term speed is well known for all of us, but how do we understand it actually? Speed, by definition, is purely related and connected to physics. However, while thinking about it, rather than see vectors and formulas from a handbook, we can see a riding cyclist, flying jet or a speedometer needle. We mostly associate speed with moving objects than with scientific background. What is more, we can differently feel the speed depending on the situation. We can sense whether we are moving fast or not. For example, when you drive a car with a speed of 50 km/h, it is relatively is not so fast, but when you ride a bike with the same speed, it feels like a lot. So, we can truly say that the human's perception of speed is relative.

In automobiles and trains, speed is measured in kilometres per hour (kph) or in miles per hour (mph), and in aeroplanes as well as in ships we usually use knots (kn). On the other hand, physicists most often use base units which are meters per second (m/s). The speed definition hides behind these units, and we can get familiar with it by examining them. Everything about speed is related to distance and time. The units of speed are specified by travelled distance units divided by units of time, and that is the general idea of speed. In a more simple way - speed is the distance travelled per unit of time.

How Fast Am I Going? - Types of Speed

Speed is not a precise term - there are a few more accurate meanings, and they should not be confused with each other. Let's consider the differences between instantaneous speed, average speed and rotational speed. For the purpose of two first, we will try to visualize it with an example of driving a car.
While looking at the speedometer in your car, you can see for example the indication of 100 kilometres per hour. This information tells you how far you will drive if you keep the constant speed. We know that in practice, keeping the exact constant speed is almost impossible (it is more applicable on the highway when driving with the cruise control assistant), and our speed more or less fluctuates all the time. The actual distance you travel in an hour is an average of all these speeds. Conclusion - the average speed is the total distance travelled in a unit of time (e.g., in an hour).

So, what the numbers (needle) on speedometer practically mean? They present your instantaneous speed, current, at this exact moment. According to handbook definition, the instantaneous speed is a change in object position x between two time moments t₁ and t₂(where this time interval approaches zero, i.e., t₂ - t₁ -> 0).

The rotational speed is a slightly bit different term, related rather to rotating objects and not to objects that change their position in space. Accordingly, the rotational speed is the number of complete revolutions that object makes in a unit of time. It is expressed in radians per seconds (rad/s) or in revolutions per minute (rpm) units. We will not focus more on this topic because it is not the aim of this speed distance calculator. If you would like to find more in the topic of angular speed, go to our angular acceleration calculator or rational kinetic energy calculator.

Average Speed Formula

Since the main purpose of this calculator is to calculate average speed, let's take a more in-depth look into this topic. Average speed is measured in units of distance per time, and the average speed formula looks like this:

Average speed = total distance / total time

Typical units are kilometres per hour (kph), miles per hour (mph), meters per second (m/s) and feet per second (ft/s). In our mph calculator, the default unit is mph (kph for metric-units countries), but you can change it to any of the common units.

Speed Calculator - How To Find Your Average Speed?

Using this speed distance calculator is really easy, and you get the result immediately. Check below points and learn how to do the calculation steps properly:

1. First, you need to determine the distance. This might be for example the distance you have driven from home to another city.
2. Now, there is a need to determine the time it took to cover a certain distance.
3. And here it is, you'll get the average speed.
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