Speed Of Light Calculator

How do you Calculate Speed of Light Distance Traveled?

This tool can help you find out how far you have traveled if you are traveling at the speed of light, or another speed, for a certain amount of time. The formula for finding out how far you would travel is:

Understanding Your Results

The result you get from using the calculator is the total amount of distance that you would have traveled if you went at the specific speed you entered for as long as you were traveling for. The number is displayed in miles by default but can be converted into some of the other commonly used units of distance measurement.

How to Use the Speed of Light Tool

If you are trying to calculate how far you would go if you are traveling at the speed of light, or another speed, for a set amount of time then you are in the right place. The steps you need to follow to get your answer include:

1. If the speed of light is different or you want to enter a different speed in general, edit the first field.


2. Enter the amount of time spent traveling at your designated speed in the second field.


3. Ensure each of the field's units are properly aligned with the values you have entered.


4. Hit calculate and get distance traveled in under a second!

Example Calculation

Let's say you want to see how far you would travel if you are going at the speed of light for a total of 3 seconds. We will leave the first field as is since it is already set to the normal speed of light, then we will enter 3 into the amount of time field and leave the seconds unit since that is correct already for our scenario.

We are now ready to hit calculate to get our answer. When we do we see that if we traveled for 3 seconds at the speed of light we would go a total of 558,848.58 miles! We can then convert that into other units of measurement by selecting the dropdown menu and choosing one of those values.