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Formula

The calculator above works out your average pace and speed for a run or ride. You enter the total time in minutes and the distance in kilometers. The calculator divides the time by the distance to get your pace (minutes per kilometer), and divides the distance by the time in hours to get your average speed (kilometers per hour).

Pace = Time (min) ÷ Distance (km)
Speed = Distance (km) ÷ (Time (min) ÷ 60)

The units are minutes per kilometer for pace and kilometers per hour for speed. If you prefer miles, convert your distance to miles and the pace will be minutes per mile (the formula stays the same).

Worked Example

You run 10 kilometers in 50 minutes. Enter 50 in the time field and 10 in the distance field. The calculator divides 50 by 10 to get a pace of 5.00 minutes per kilometer. For speed, it divides 10 by (50 ÷ 60) = 0.8333 hours, giving 12.00 kilometers per hour.

So your average pace is 5:00 per kilometer and your average speed is 12 km/h. That is a common tempo run pace for many recreational runners.

How to Read the Result

A lower pace number means you are running faster (fewer minutes per kilometer). A higher speed number means you are moving faster. For example, a pace of 6:00 per kilometer is slower than 5:00 per kilometer, and the speed will be lower (10 km/h vs 12 km/h).

Pace is useful for training plans that prescribe effort levels (easy, tempo, interval). Speed is more intuitive for cycling or driving. Both numbers are averages – they do not show how your pace varied during the activity.

Common Mistakes

One frequent error is mixing units. If you enter a distance in miles but the time in minutes, the pace will be in minutes per mile, which is fine, but the speed will be in miles per hour. Do not compare a minutes-per-mile pace to a minutes-per-kilometer pace directly – they differ by a factor of 1.609.

Another mistake is using seconds in the time field. The calculator expects minutes only. If your run took 45 minutes and 30 seconds, convert the seconds to a decimal: 30 ÷ 60 = 0.5, so enter 45.5 minutes.

Rounding can also mislead. A pace of 5.67 min/km is exactly 5 minutes and 40 seconds per kilometer (0.67 × 60 = 40.2 seconds). Many runners round to the nearest second, but for training logs, use the decimal form.

When to Use This Calculator

Use it after a run or ride to see your average pace and speed. It is also handy for planning: if you want to finish a 10 km race in 55 minutes, enter 55 and 10 to see the required pace (5:30 per km). That tells you whether your current fitness can hit that target.

For interval training, you can compute the pace for each repeat and compare. For a long bike ride, the speed output helps you estimate arrival times. The calculator is not a substitute for a GPS watch – it gives a simple average, not real-time data.

Limitations of the Formula

The formula assumes a constant pace. In reality, you slow down on hills, speed up on descents, and take breaks. The average pace is still useful, but it does not reflect the effort distribution. For hilly courses, your average pace may be slower than your flat-course pace even if you work just as hard.

The calculator also ignores elevation gain, wind resistance, and terrain. For running on a treadmill, the pace is accurate because the belt speed is constant. For outdoor running, GPS watches measure distance more accurately than the treadmill’s belt, so the numbers may differ slightly.

Finally, the calculator does not account for heart rate or perceived effort. Two runners with the same pace can have very different heart rates. Use pace as one tool, not the only measure of your training.

Frequently Asked Questions

How do I convert my pace to seconds per kilometer?
Multiply the decimal part of the pace by 60. For example, 5.67 min/km = 5 minutes + 0.67 × 60 = 5:40 per km. For 6.25 min/km, it is 6 minutes + 0.25 × 60 = 6:15 per km.

What is a good running pace for a beginner?
Most beginners run at 7:00 to 9:00 per kilometer (about 6.7 to 8.6 km/h). It depends on age, fitness, and weight. A comfortable conversational pace is a good starting point – you should be able to speak in short sentences.

Does the calculator work for walking?
Yes, the formula is the same for walking. A typical walking pace is 12 to 15 minutes per kilometer (4 to 5 km/h). Enter your walking time and distance to get your average.

Why is my speed different from my treadmill’s display?
Treadmills often show speed in km/h or mph, but they may not be calibrated. Also, the treadmill calculates based on belt speed, while GPS watches measure actual distance outdoors. The difference is usually small but can be larger on uneven terrain.

Can I use this for cycling?
Yes, enter your cycling time and distance. The speed output will be in km/h, which is standard for cycling. For a 40 km ride in 2 hours (120 minutes), the pace is 3:00 per km and the speed is 20 km/h.

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in t | Finish time | min | 50 | 0
in d | Distance | km | 10 | 0 | 100000
out pace | Average pace | min/km | t / d | 2
out speed | Average speed | km/h | d / (t / 60) | 2