Speed Distance Time Calculator
Calculate speed, distance, or time — enter any two values and the third is computed automatically. Multiple unit support.
Quick Examples
Reference Formulas
How to Use Speed Distance Time Calculator
- 1
Enter values for any two of the three fields: Speed, Distance, or Time.
- 2
Select the appropriate unit for each field.
- 3
The third field calculates automatically.
- 4
View the formula used below the calculator.
- 5
Try the quick example presets for common scenarios.
About Speed Distance Time Calculator
The Speed Distance Time Calculator solves for any one of the three variables when the other two are known. Enter speed and time to find distance, distance and time to find speed, or speed and distance to find time. Supports multiple units for each variable.
The Formula
The relationship between speed, distance, and time follows three simple formulas: Distance = Speed × Time, Speed = Distance ÷ Time, Time = Distance ÷ Speed. This calculator handles unit conversions automatically, so you can mix and match units freely.
Supported Units
Speed: km/h, m/s, mph, knots. Distance: kilometres, metres, miles, nautical miles. Time: seconds, minutes, hours, days.