Speed, Distance & Time Calculator
Choose what to solve for and enter the other two values to get speed, distance or time.
How to use it
- Choose what to solve for Speed, distance or time.
- Enter the other two values Keep the units consistent.
- Read the answer The result updates instantly.
Examples
| 150 mi in 2.5 h | 60 mph |
|---|---|
| 60 mph for 2 h | 120 mi |
About this tool
Speed, distance and time are linked by one simple relationship, and knowing any two gives you the third. This calculator solves for whichever one you need.
Pick what to solve for, enter the other two values with consistent units, and the answer appears instantly. It is handy for travel planning, running and cycling, and physics homework. Everything runs in your browser.
Frequently asked questions
What are the formulas?
Speed = distance ÷ time, distance = speed × time, and time = distance ÷ speed.
What units should I use?
Any, as long as they match — for example miles, miles per hour and hours, or kilometres, km/h and hours.
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Updated June 12, 2026