App Screen Pinning Android: How to Lock Any App

App screen pinning on Android lets you lock a single app to the screen so the user can’t leave it without entering your PIN, pattern, or password. You turn it on in Settings, start the app, and use the Recents button to pin it. This guide explains exactly how to set it up, what it does and doesn’t protect, and how to unpin when you’re done.

Formula

The calculator works out your average pace and speed from two numbers you enter: the time it took you to finish (in minutes) and the distance you covered (in kilometers). The formulas are:

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

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

Where:

• Total time is the elapsed time in minutes (e.g., 50 minutes).
• Distance is the distance in kilometers (e.g., 10 km).
• Pace is the number of minutes it takes to cover one kilometer.
• Speed is the average kilometers per hour over the whole run.

Worked Example

Using the default values from the calculator (50 minutes, 10 km):

1. Pace = 50 ÷ 10 = 5.00 min/km
2. Speed = 10 ÷ (50 ÷ 60) = 10 ÷ 0.8333 = 12.00 km/h

So a 10 km run in 50 minutes gives an average pace of 5:00 per kilometer and an average speed of 12 km/h. The calculator shows the pace as the headline answer (5.00 min/km) and the speed as a secondary output.

When to Use This Calculator

Use this tool when you want to know your running or cycling pace from a single workout, or when you need to convert a finish time into a speed for training zones, race predictions, or comparing efforts on different distances. It’s also handy for planning: if you know your target pace, you can work backward to see what time you’ll finish a given distance.

The result is an average, not a split. It assumes you kept a steady effort the whole way. If you ran hills, stopped for traffic, or walked part of the route, your actual pace varied – the number you get is the overall average.

How to Read the Result

Pace is shown in minutes per kilometer (min/km). A lower number means faster. For example, 5.00 min/km is faster than 6.00 min/km. Speed is shown in kilometers per hour (km/h); a higher number means faster. Both numbers describe the same effort – they’re just two ways of looking at it.

Most runners think in pace (min/km), while cyclists and drivers think in speed (km/h). The calculator gives you both so you don’t have to convert manually.

Common Mistakes

• Mixing units: If you enter distance in miles but the calculator expects kilometers, your pace will be off by about 1.6×. Always convert miles to kilometers first (1 mile = 1.60934 km).
• Using seconds instead of minutes: If you enter 50 seconds instead of 50 minutes, the pace will be absurdly small. Keep time in minutes.
• Forgetting that pace is per unit, not total: A 50-minute 10K gives a pace of 5 min/km, not 50 min/km. The division does that for you.

Limitations of the Formula

The formula assumes a constant speed. Real workouts have acceleration, deceleration, and stops. It also doesn’t account for elevation gain, terrain, or weather – those factors make the actual effort harder or easier but don’t change the average pace calculation. For interval sessions, you’d need to calculate each repeat separately.

The calculator also assumes you enter the total time for the whole distance. If you only have a split (e.g., 5 km split of a 10 km race), the result will only reflect that segment, not the full race.

Frequently Asked Questions

What is a good running pace?

It depends on your fitness, age, and gender. A recreational runner might do 6–7 min/km; a competitive club runner might do 4–5 min/km; elites run under 3 min/km for a 10K. Use your own recent times as a baseline rather than comparing to strangers.

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

Multiply the pace in min/km by 1.60934. For example, 5.00 min/km × 1.60934 = 8.05 min/mile. To go the other way, divide by 1.60934.

Can I use this for walking?

Yes. Walking pace is usually 10–15 min/km. Enter your walk time and distance, and you’ll get your average walking pace and speed.

Why does the calculator show pace in minutes per kilometer but speed in kilometers per hour?

Because that’s the standard convention. Pace is a time per distance, speed is a distance per time. They’re reciprocals of each other (with unit conversion). The calculator shows both so you can use whichever you prefer.

What if I run on a treadmill and the distance is in miles?

Convert miles to kilometers first. Multiply the miles by 1.60934 to get kilometers, then enter that number. For example, 3.1 miles × 1.60934 = 4.99 km.

How accurate is this for race prediction?

It’s accurate for the specific workout you enter. For predicting a different distance, you’d need a more complex model (like Riegel’s formula) that accounts for fatigue over longer distances. This calculator only gives your average for the distance you actually ran.

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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