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06 Numbers and Powers

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Card No. 06·38674 · Updated · Standard formula, shown below

Average pace 5.00 min/km
Average speed
12.00 km/h
Result
Total time
50 min
You entered
Distance
10 km
You entered
You enter
Total time, Distance
You get
Average pace, Average speed
Rounding
2 dp

Yes, Microsoft Word has a built-in feature to show or hide hidden text. You can toggle the display of hidden text via File > Options > Display, or use the pilcrow (¶) button on the Home tab to reveal all formatting marks, including hidden text. This article explains exactly how to do it, why text becomes hidden in the first place, and how to avoid common pitfalls.

Formula

The calculator above works out your average pace and speed for a run, walk, or cycle. The core formula is simple:

Pace (min/km) = Total time (minutes) ÷ Distance (km)

Speed (km/h) = Distance (km) ÷ (Total time (minutes) ÷ 60)

Where:

  • Total time (t) – the time it took you to cover the distance, in minutes.
  • Distance (d) – the distance you covered, in kilometres.
  • Pace – the number of minutes it takes you to cover one kilometre.
  • Speed – the number of kilometres you cover in one hour.

If you prefer miles, you can enter distance in miles and the result will be in min/mile and mph – the math works the same.

Worked Example

Let’s use the default values from the calculator: you ran 10 km in 50 minutes.

  1. Pace: 50 min ÷ 10 km = 5.0 min/km
  2. Speed: 10 km ÷ (50 min ÷ 60) = 10 ÷ 0.8333 = 12.0 km/h

So your average pace is 5 minutes per kilometre, and your average speed is 12 kilometres per hour. The calculator shows the same results (5.00 and 12.00).

When to Use This Calculator

Use this tool whenever you want to know your average pace for a training run, or to estimate how fast you need to go to hit a target time. For example, if you want to finish a 10 km race in under 50 minutes, you need to run faster than 5.0 min/km.

It’s also useful for planning: if you know your comfortable pace, you can estimate how long a longer run will take. For instance, at 5.5 min/km, a half marathon (21.1 km) would take about 116 minutes (1h56m).

How to Read the Results

Pace is the number most runners use, because it’s easy to check mid-run. A lower pace number means faster. Speed is more common in cycling and driving. Both are just two ways of expressing the same relationship.

Note that the calculator gives an average pace – it doesn’t account for hills, stops, or changes in effort. Your actual pace will vary throughout the run.

Common Mistakes

  • Mixing units: If you enter time in minutes but distance in miles, the pace will be in min/mile, not min/km. That’s fine, but be consistent.
  • Forgetting to convert hours: If you run for 1 hour 15 minutes, enter 75 minutes, not 1.15. The calculator expects minutes.
  • Rounding too early: If you round the pace to 5.0 and then use that to calculate speed, you’ll get a slightly different answer than if you used the exact time. Keep full precision until the end.

Limitations of the Formula

This is a simple average – it doesn’t account for elevation gain, terrain, wind, or fatigue. For a hilly course, your pace will naturally be slower uphill and faster downhill. The formula also assumes you are moving the whole time; if you stop for water, your total time includes those stops, so your moving pace will be faster than the average pace shown here.

For serious training, many athletes use GPS watches that give real-time pace and heart rate, but this calculator is perfect for quick estimates and planning.

Frequently Asked Questions

How do I convert pace to speed?

Speed = 60 ÷ pace (in minutes per km). For example, a 5 min/km pace means 60 ÷ 5 = 12 km/h. Conversely, pace = 60 ÷ speed.

What is a good running pace for a beginner?

It depends on age, fitness, and gender, but a comfortable conversational pace for a beginner is often around 6:30–8:00 min/km (9–11 km/h). The best pace is one you can maintain without excessive strain.

Is it better to use pace or speed?

Runners tend to use pace (min/km) because it’s easier to check on a watch. Cyclists and drivers use speed (km/h). Both are equivalent – use whichever you find intuitive.

How do I calculate pace for a marathon?

Enter the full distance (42.195 km) and your target time in minutes. For example, a 4-hour marathon is 240 minutes ÷ 42.195 km = 5.69 min/km (about 5:41 per km).

Does this calculator work for walking?

Yes, it works for any activity where you move at a steady speed – walking, hiking, cycling, or even driving. Just enter the total time and distance.

How accurate is the average pace?

It’s exact for the total time and distance you enter. The only inaccuracy comes from GPS distance errors or if you stop during the activity – then the average pace is slower than your moving pace.

Related

Formula used
in t | Total 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

Each line is one input (in, sel, list) or one result (out: label, unit, formula, decimals). How the calculators work

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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