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Formula

The calculator above works out your average pace and speed for a run, walk, or cycle. You enter the total time taken (in minutes) and the distance covered (in kilometers), and it returns your average pace in minutes per kilometer and your average speed in kilometers per hour.

The formula for pace is:

Pace (min/km) = Total Time (min) / Distance (km)

The formula for speed is:

Speed (km/h) = Distance (km) / (Total Time (min) / 60)

Where:

• Total Time (t) is the duration of the activity in minutes.
• Distance (d) is the distance covered in kilometers.
• Pace is the time it takes to cover one kilometer, expressed in minutes per kilometer (min/km).
• Speed is the distance covered per hour, expressed in kilometers per hour (km/h).

Worked Example

Using the default values from the calculator above: you finish a 10 km run in 50 minutes.

Step 1: Calculate the pace.

Pace = 50 min / 10 km = 5.0 min/km

Step 2: Calculate the speed.

Speed = 10 km / (50 min / 60) = 10 km / 0.8333 h = 12.0 km/h

So your average pace is 5:00 per kilometer, and your average speed is 12.0 km/h. The calculator shows the same result: pace 5.00 min/km and speed 12.00 km/h.

When to Use This Calculator

Use this calculator whenever you want to know your training pace for a specific distance and time. Runners often use pace to plan race strategies: if you want to finish a half marathon (21.1 km) in under 2 hours, you need a pace faster than 5:41 per km. Walkers and cyclists can also use it to track their typical speed over a known route. The result is useful for setting realistic goals, comparing workouts, and estimating finish times for other distances.

How to Read the Result

The pace result tells you how many minutes and seconds you take to cover one kilometer. A lower pace number means you are moving faster. For example, a pace of 4:30 min/km is faster than 5:00 min/km. The speed result is more intuitive for many people: 12 km/h is the speed you would see on a bike computer or treadmill display. Note that pace is usually expressed in minutes and seconds per kilometer, while speed is in whole kilometers per hour. The calculator gives pace in decimal minutes (5.00), which you can convert to 5:00 by multiplying the decimal part by 60 (0.00 × 60 = 0 seconds).

Common Mistakes

The most frequent mistake is mixing units. If you enter your time in hours instead of minutes, the pace will be off by a factor of 60. For example, 1 hour (60 minutes) over 10 km should give a pace of 6:00 min/km, but entering 1 as the time would give 0.1 min/km, which is impossibly fast. Always convert hours to minutes before entering. Another common error is using miles instead of kilometers. If you run 10 miles in 80 minutes, your pace is 8:00 per mile, but the calculator assumes kilometers, so it would show 8:00 min/km, which is not correct. Convert miles to kilometers by multiplying by 1.60934, or use a calculator that supports miles.

Limitations of the Formula

This calculator assumes a constant pace throughout the activity. In reality, your pace varies with terrain, wind, and fatigue. The result is an average, not a moment-by-moment measurement. It also does not account for elevation gain, which can make a route slower than the same distance on flat ground. For precise training, use a GPS watch or phone app that records your pace in real time. The formula is still useful for planning and post-activity analysis, but it is not a substitute for a device that measures your actual pace during the run.

Frequently Asked Questions

How do I convert pace from min/km to min/mile?

To convert a pace from minutes per kilometer to minutes per mile, multiply the pace by 1.60934. For example, a 5:00 min/km pace is 5 × 1.60934 = 8:03 per mile. You can also divide your speed in km/h by 1.60934 to get speed in mph.

What is a good running pace for a beginner?

A comfortable conversational pace for a beginner is often between 6:30 and 8:00 min/km (10.5 to 9.2 km/h). This varies widely with age, fitness, and experience. The best pace is one you can maintain while still holding a conversation without gasping.

Does this calculator work for walking or cycling?

Yes, the formula works for any activity where you cover a distance over time. For walking, typical paces are 10 to 15 min/km (4 to 6 km/h). For cycling, speeds are often 15 to 30 km/h, so the pace in min/km would be 2 to 4 min/km, which is fine.

How do I estimate my finish time for a longer race?

Take your average pace from a recent race or training run and multiply it by the distance of the target race. For example, if your 10 km pace is 5:30 min/km, a half marathon (21.1 km) would take 21.1 × 5.5 = 116 minutes, or 1:56:00. This assumes you can maintain the same pace, which is harder for longer distances.

Should I use the pace or speed result for my training plan?

Most running plans use pace (min/km) because it is easier to check on a watch during a run. Speed (km/h) is more common for cycling and treadmill settings. Both are equivalent, so use whichever you find easier to remember.

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