How the speed distance time calculator works
Pick which of the three you want to find, then enter the other two. The relationship is simple: distance equals speed times time. Rearranged, time equals distance divided by speed, and speed equals distance divided by time. The tool applies the right form automatically and shows all three values together.
The distance, speed, time triangle
Many people remember this as a triangle with distance on top and speed and time below. Cover the value you want and the triangle shows the formula: cover distance and you multiply the other two; cover speed or time and you divide. This calculator does the arithmetic so you can focus on the answer.
Keeping units consistent
The tool works in miles, miles per hour, and hours. If your time is in minutes, convert it to hours first, for example 30 minutes is 0.5 hours. The result also shows speed in kilometers per hour and time in minutes so you can read it in whichever unit suits you.
Common uses
Use it to work out how long a journey takes, what average speed you need to arrive on time, or how far you can travel in a set time. It is handy for trip planning, running and cycling pace, and physics homework. For a fuller trip plan with breaks and arrival time, use the travel time calculator.
Frequently asked questions
What is the formula for speed? Speed equals distance divided by time; this tool can solve for any of the three.
How do I find travel time? Divide the distance by the speed; convert minutes to hours first if needed.
How do I convert mph to km/h? Multiply by 1.609; the tool shows the km/h value automatically.
Related calculators: Travel Time, Fuel Cost, Time Zone.