Speed, Distance and Time Calculator
Enter any two of speed, distance and time to find the third. Add a running pace to see your pace per kilometre and per mile, or predict your finish time for a 5K, 10K, half marathon or marathon.
Ce contenu est en anglais.
Speed, distance and time
Running pace
Race finish time
Exemples détaillés
Speed from distance and time
100 km covered in 2 hours
50 km/h
Speed is distance divided by time, so 100 divided by 2 gives 50.
Speed for a short run
5 km covered in 25 minutes
About 12 km/h.
The 25 minutes is first converted to 25/60 of an hour, so 5 divided by 0.4167 is about 12.
À propos de Speed, Distance and Time Calculator
Speed, distance and time are linked by one simple idea: speed is distance divided by time. If you know two of these figures, you can always find the third, which is useful for planning a journey, estimating how long a trip will take or checking how fast you travelled. The calculator lets you choose which value to work out and accepts kilometres, miles, metres, hours, minutes, seconds, km/h, mph and metres per second. Enter two values and the third appears as you type, with the time also written in hours and minutes so it is easy to read.
Runners use the same relationship to plan races. Pace is the time taken to cover one kilometre or one mile, usually written as minutes and seconds, such as 5:30 per km. The pace section converts a finished run into both kilometre and mile pace and shows your average speed. The race predictor works the other way round, multiplying a pace you expect to hold by the distance of a 5K, 10K, half marathon or marathon, so you can see a realistic finish time to aim for before race day.
Comment utiliser Speed, Distance and Time Calculator
- Choose the value you want to find, such as speed, distance or time.
- Enter the other two values and pick the unit for each one.
- Read the answer, which also shows the time in hours and minutes when the answer is a time.
- Use the running pace or race predictor boxes to plan training or an event.
Usages courants
- Working out how long a drive or cycle ride will take at a steady speed
- Checking a running pace for a training session in minutes per kilometre
- Setting a goal finish time for a 10K or half marathon
- Comparing average speeds for a journey in kilometres per hour and miles per hour
Questions fréquentes
How do you work out speed?
Divide the distance by the time. A car that covers 150 km in 2.5 hours is travelling at 60 km/h, because 150 divided by 2.5 is 60. If your time is in minutes, convert it to hours first, or use the unit selector, which does this for you. Speed is always distance divided by time, so keep the units consistent as you work through the sum.
What is a good running pace?
A good pace depends on your fitness, age and experience, so there is no single right answer. Many recreational runners complete a 5K at around 5:30 to 7:00 per km, while experienced runners can be well under 4:00 per km. Use the pace figures to track your own progress over time, and compare them with your own past runs rather than with other people.
How accurate is the race finish predictor?
The predictor multiplies your expected pace by the race distance, so it gives a finish time if you hold that pace from start to finish. It does not allow for hills, weather, crowds, fatigue or pacing mistakes, which are common in longer races. Treat the result as a target to aim for rather than a promise, and remember that many runners slow in the second half of a marathon.
How long is a marathon in miles?
A marathon is 42.195 kilometres, which is 26.2 miles. A half marathon is 21.0975 kilometres, or 13.1 miles. These are the official race distances used by most events. The race predictor uses the exact kilometre figures, so the finish time works out correctly whichever unit you enter your pace in.
Can I convert pace between minutes per km and per mile?
Yes. One mile is 1.609344 kilometres, so a pace per mile is 1.609344 times the pace per kilometre. For example, 5:00 per km is about 8:03 per mile. Enter your pace in either unit in the race predictor, and it converts the figure before working out the finish time, so you do not need to do the sum yourself.