Speed Distance Time Calculator with Built-in Distance Conversion and Dynamic Tutorials.

Speed Distance Time Calculator Sign

This calculator will calculate speed, distance, or time given the other two variables.

A built-in distance conversion calculator allows you to enter or request unlike speed and distance units (e.g., miles per hour speed to distance in kilometers), and a time converter allows you to convert between speed ratios (per hour, per minute, per second).

And finally, each calculation includes a step-by-step explanation showing how the calculator arrived at the result.

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Speed Distance Time Calculator

Calculate speed, distance, or time given the two known variables.

Special Instructions

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Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
Solve for:

Solve for:

Select the missing variable you wish to solve for (time, distance, or speed). After choosing the variable you wish to solve for, next choose the units your want the variable result to be expressed in.



If solving for distance or time, enter the speed based on the selected speed ratio. Otherwise, if solving for speed, select the units you would like the speed result to be expressed in.

Result in:


If solving for speed or time, enter the number of distance units based on the selected unit of measurement. Otherwise, if solving for distance, select the distance units you would like the result to be expressed in.



If solving for speed or distance, enter the time duration in hours, minutes, and seconds. Otherwise, if solving for time, select the time units you would like the result to be expressed in.

Decimal places:


Select the number of decimal places you would like the result rounded to.

Miles per hour:


Based on your entries, this is the Miles per hour result. Note that you can change the result's decimal places at any time.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

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Help and Tools


How to solve for Speed, Distance, and Time, and an interactive distance conversion chart.

How to Calculate Distance

To calculate distance from the speed and time, you multiply the speed by the time.

Distance = Speed x Time

For example, if you are traveling at a speed of 60 miles per hour for 2 hours, the distance would be equal to 120 miles (60 x 2 = 120 miles).

How to Calculate Speed

To calculate the speed given the distance and time, you divide the distance traveled by the time elapsed.

Speed = Distance ÷ Time

For example, if you traveled 120 miles in 2 hours, the speed would be equal to 60 miles per hour (120 ÷ 2).

How to Calculate Time

To calculate the time from the speed and distance, you divide the distance by the speed.

Time = Distance / Speed

For example, if you traveled 120 miles at a speed of 6- miles per hour, the time elapsed would be 2 hours (120 ÷ 60 = 2).

Interactive Distance Conversion Chart

If you need to convert between distance units, select the unit you are converting from, and the following distance conversion table will update to reflect your selection (results rounded to 9 decimal places if the entered number of units is greater than 1).

1 Mile =
0.8689762419Nautical Miles

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.