Pace Calculator
Choose what you want to calculate, enter your values, and press Calculate.
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Calculate running pace, finish time, distance, splits, and pace conversions. Then learn how to match your pace and heart-rate zone to recovery, endurance, tempo, interval, or race-training goals.
Choose what you want to calculate, enter your values, and press Calculate.
Running pace tells you how long it takes to cover a particular distance. If you run one mile in 10 minutes, your pace is 10:00 per mile. If you run one kilometer in 6 minutes, your pace is 6:00 per kilometer. That sounds simple, but pace becomes much more useful when you connect it to a second question: what are you trying to accomplish?
The pace you might choose for an easy recovery run should not necessarily be the pace you use for a hard interval workout. Likewise, a pace that feels comfortable for one runner may create a much higher heart-rate response in another. That is why a useful pace calculator should do more than divide time by distance. It should help you understand your pace, your speed, your finish time, your splits, your heart-rate response, and how those numbers may fit your training goal.
Pace is what you do. Heart rate is one way to estimate how your body responds. Your training goal determines how you use both.
| Stage | What It Represents |
|---|---|
| Your Pace | What you actually do: time per mile or kilometer |
| Your Body's Response | Heart rate, breathing, and perceived effort |
| Your Training Zone | An estimate of intensity based on that response |
| Your Goal | Recovery, endurance, tempo, intervals, or race preparation |
To calculate running pace, divide your total time by the distance traveled. The basic running pace formula is pace equals time divided by distance.
Suppose you run 5 miles in 45 minutes. Your pace is 45 ÷ 5 = 9 minutes per mile. Your running pace is therefore 9:00 per mile.
For kilometers, the calculation works exactly the same way. If you run 10 kilometers in 60 minutes, your pace is 60 ÷ 10 = 6:00 per kilometer.
The CalculateThisWay Pace Calculator performs these calculations automatically and can also convert between miles, kilometers, and running speed.
Pace and speed describe the same movement from opposite directions. Pace asks how much time each mile or kilometer takes. Speed asks how much distance you travel in one hour. A lower pace number means you are moving faster.
For example, 12:00 per mile equals 5 mph. 10:00 per mile equals 6 mph. 8:00 per mile equals 7.5 mph. 6:00 per mile equals 10 mph. So when a runner improves from 10:00 per mile to 9:00 per mile, the runner is moving faster even though the pace number became smaller.
Faster speed equals a lower minutes-per-mile pace. Slower speed equals a higher minutes-per-mile pace.
| Pace per Mile | Speed |
|---|---|
| 12:00 | 5 mph |
| 10:00 | 6 mph |
| 8:00 | 7.5 mph |
| 6:00 | 10 mph |
The right running pace depends on your fitness level and whether your goal is recovery, endurance, tempo training, intervals, or racing. There is no single running pace that everyone should use. Your appropriate pace can change depending on whether the workout is designed for recovery, aerobic endurance, general cardiovascular fitness, tempo work, high-intensity intervals, or race preparation.
Two people can also run the exact same pace and experience very different levels of effort. For this reason, pace becomes more meaningful when combined with another measure of intensity such as heart rate or perceived effort.
Pace tells you how fast you are moving. Heart rate gives you one estimate of how your body is responding to that effort. Those are related measurements, but they are not the same thing.
Imagine two runners moving at 10:00 per mile. Runner A is well trained and records 125 beats per minute. Runner B records 155 beats per minute. The external pace is identical. The internal effort is not. This is one reason you should be cautious when searching for questions such as "what pace is Zone 2?" There is no universal Zone 2 running pace. One runner's Zone 2 pace might be another runner's Zone 3 or Zone 4 pace.
This is why pace alone cannot determine a heart-rate zone. These are hypothetical examples used for illustration only.
| Runner | Pace | Heart Rate | Estimated Zone |
|---|---|---|---|
| Runner A (example) | 10:00/mile | 125 bpm | Zone 2 estimate |
| Runner B (example) | 10:00/mile | 150 bpm | Zone 4 estimate |
Heart-rate zones are commonly estimated by comparing exercise heart rate with a percentage of estimated maximum heart rate. Heart-rate zones divide exercise intensity into ranges based on a percentage of maximum heart rate. Nebraska Medicine's guide, What to know about heart rate zones and exercise, describes a commonly used five-zone approach.
Different watches, apps, coaches, and training systems may use slightly different boundaries. These zones should therefore be viewed as training guides rather than exact biological walls.
Estimated percentages of maximum heart rate for each zone. Enter your age or measured maximum heart rate in the Pace + Heart Rate Zone Check mode above to see estimated beats-per-minute ranges here.
| Zone | % of Max HR | Typical Effort |
|---|---|---|
| Zone 1 | 50% to 60% | Very Light |
| Zone 2 | 60% to 70% | Light to Moderate |
| Zone 3 | 70% to 80% | Moderate |
| Zone 4 | 80% to 90% | Hard |
| Zone 5 | 90%+ | Very Hard |
Heart-rate zones are commonly estimated by comparing exercise heart rate with a percentage of estimated maximum heart rate. The first step in calculating heart-rate zones is estimating maximum heart rate. One widely used simple estimate is maximum heart rate equals 220 minus age.
For a 40-year-old: 220 − 40 = 180 beats per minute. Using 180 as the estimated maximum: Zone 1 is about 90 to 108 bpm, Zone 2 is about 108 to 126 bpm, Zone 3 is about 126 to 144 bpm, Zone 4 is about 144 to 162 bpm, and Zone 5 is above approximately 162 bpm.
This formula is easy to use, but it is only an estimate. Actual maximum heart rate can differ from the predicted number. Age, fitness, medications, health status, and individual physiology can influence heart-rate response. If someone knows a measured maximum heart rate from appropriate testing, the calculator above allows that number to replace the basic age estimate. For users who want a dedicated heart-rate calculation, the Target Heart Rate Calculator can provide a more detailed target-heart-rate breakdown.
Many common fitness systems use five heart-rate zones. The five-zone model is useful because it provides a simple progression from very light activity to very hard effort. However, not every training system defines zones the same way. Some systems use three zones, five zones, six zones, or different percentage boundaries. That does not automatically make one system right and another wrong. For general fitness users, consistency is often more important than switching between several different zone systems.
Zone 1 represents very light exercise. This may include easy walking, very easy cycling, slow jogging for trained runners, warm-ups, cool-downs, and recovery movement. The goal is not speed. The goal is low training stress. If someone is supposed to be performing a recovery workout but must push hard to maintain a planned pace, that pace is probably defeating the purpose of the workout.
Zone 2 has become one of the most searched forms of heart-rate training. It generally represents sustainable light-to-moderate aerobic exercise. Examples can include brisk walking, comfortable jogging, steady cycling, or swimming. Nebraska Medicine notes that Zone 2 is commonly used to support endurance, cardiovascular fitness, and weight-management goals.
A key feature is sustainability. The effort should generally be much easier to maintain than high-intensity interval work. For a runner, the correct Zone 2 pace is therefore not a universal number. Instead, it is the pace at which that runner's heart rate generally remains in their chosen Zone 2 range. If that requires 9:30 per mile, that may be their current Zone 2 pace. If it requires 12:00 per mile, then 12:00 per mile may be more appropriate. If it requires alternating walking and jogging, that can also be appropriate. Fitness improves from training the intended system, not from forcing yourself to match someone else's pace.
Start by estimating your Zone 2 heart-rate range. Then warm up gradually, begin running or walking at an easy pace, monitor your heart rate, allow time for heart rate to respond, and adjust your pace until your heart rate remains reasonably within the intended range.
Over time, you may notice that you can maintain a faster pace at the same heart rate. That can be one indicator of improved aerobic fitness. However, daily conditions matter. Heat, hills, fatigue, and other factors may raise heart rate even when pace stays the same. This is another reason the Pace Calculator should never permanently label one pace as "your Zone 2 pace." Your relationship between pace and heart rate can change.
Zone 3 generally represents moderate exercise. For runners, this may feel more purposeful than an easy endurance run but still more sustainable than threshold or interval work. Zone 3 can appear during steady runs, moderately hard cardio sessions, long hills, and portions of longer races. Not every workout needs to occur in Zone 3. The correct intensity depends on the workout goal.
Zone 4 is generally considered hard exercise. This range is often associated with tempo work, threshold-focused sessions, harder sustained intervals, and some race efforts. Unlike an easy Zone 2 session, Zone 4 work is not usually intended to feel comfortably sustainable for a long period. If the goal is a hard tempo workout, running so slowly that your heart rate never rises beyond an easy zone may not produce the intended training challenge. The opposite is also true. If the plan calls for an easy endurance session, constantly pushing into Zone 4 may make the workout unnecessarily difficult.
Zone 5 represents very high effort near an estimated maximum. This type of effort is generally used for shorter hard intervals rather than long continuous training. Examples may include short running intervals, hard hill repeats, sprints, or other brief high-intensity efforts. Zone 5 should not be treated as the zone everyone should chase simply because it is the highest number. More intensity is not automatically better. A useful training plan can contain several different intensities.
Aerobic exercise relies primarily on energy systems that can support sustained activity with oxygen available to help produce energy. Examples include walking, comfortable jogging, steady cycling, and swimming. As exercise intensity rises, anaerobic energy contribution becomes increasingly important. Hard intervals and sprint-like efforts rely more heavily on these higher-intensity systems.
This is not an on-off switch. The body uses multiple energy systems at the same time, with their relative contribution changing as intensity increases. That is another reason heart-rate zones should be viewed as practical training ranges rather than exact physiological borders.
Zone 2 is commonly emphasized for aerobic endurance because it can usually be sustained for relatively long periods without the fatigue associated with harder training. But an endurance program does not necessarily consist entirely of Zone 2. Depending on experience, sport, goal, race distance, and training plan, harder sessions may also have a role. For this Pace Calculator, the important idea is simple: if your goal is easy aerobic endurance, choose the pace that allows you to stay near the intended easy-to-moderate intensity. Do not choose pace first and then force your body to match it.
There is no single zone that everyone must use. Nebraska Medicine emphasizes that the biggest improvement for someone who is sedentary can simply come from becoming regularly active. Different workout intensities can contribute to cardiovascular fitness in different ways. A practical plan may include easier aerobic sessions, moderate training, and harder workouts instead of performing every workout at the same intensity.
General training references. Not medical advice and not personalized to any individual.
No single heart-rate zone guarantees fat loss. Lower-intensity exercise may use a larger percentage of fat as fuel, while higher intensities may burn more total energy. Fitness equipment often labels one intensity range as the "fat-burning zone." This can be misleading if interpreted to mean that exercising in another zone cannot help with fat loss.
At lower intensities, the body may obtain a larger percentage of its energy from fat. However, higher-intensity exercise can use more total energy. Body-fat change ultimately depends on broader energy balance over time. Therefore, Zone 2 can be useful because many people can sustain it longer and recover from it more easily, but it is not a magical fat-loss switch. For a fuller picture of daily energy balance, the TDEE & Calorie Calculator and the Calories Burned Calculator can help estimate total energy needs and activity-based calorie use.
There is no single fat-loss pace. A more useful goal is finding an intensity that you can perform safely, repeat consistently, and recover from. For many people, lower-to-moderate intensity walking, jogging, or cycling can be easier to sustain for longer periods. Higher-intensity exercise may also contribute to total energy expenditure. The best pace is therefore not simply the fastest pace possible. It is the pace that fits the workout, fitness level, and overall training plan.
Recovery pace should feel intentionally easy. The goal is not setting a personal record. Many athletes use Zone 1 or low Zone 2 as a general intensity reference for easy recovery work. A runner who normally races at 8:00 per mile may need to run substantially slower during recovery. That is not lost fitness. It is a different workout with a different purpose.
Base endurance training is usually performed at an intensity that can be sustained for longer periods. Zone 2 is commonly used as a reference. Rather than selecting a fixed number such as 10:00 per mile for everyone, start with your individual heart-rate range and adjust pace accordingly. As fitness improves, your pace at the same heart rate may become faster. That is often a more useful comparison than comparing your pace to strangers online.
Tempo training is intentionally harder than an easy endurance run. Depending on the training system being used, tempo or threshold work commonly reaches the upper moderate-to-hard zones. The exact pace should be based on the athlete's current ability rather than a universal chart. A trained runner's tempo pace may be faster than another runner's race pace. That does not make either runner's training incorrect.
Intervals involve alternating harder efforts with recovery periods. The pace depends heavily on interval length, workout purpose, current fitness, and recovery duration. Shorter intervals can generally be performed faster than longer intervals. Heart rate may also lag behind pace during very short intervals. For this reason, pace, heart rate, and perceived effort can all provide useful information during interval workouts.
Race pace depends on the race distance. A pace that can be sustained for one mile usually cannot be sustained for a marathon. The Pace Calculator's finish-time and split tools above can help convert a target race result into pace per mile, pace per kilometer, and expected splits. For example, if you want to run a race in a certain total time, enter the race distance and target finish time into the Finish Time or Race Split Planner mode. The calculator can then show the average pace required.
Remember that real races are affected by terrain, weather, crowding, fatigue, hydration, and pacing strategy. A perfectly even mathematical split is useful for planning but not guaranteed in the real world.
To calculate race splits, divide your target finish time by the race distance to get an average pace, then multiply that pace by each split distance to estimate elapsed time at each point. Suppose your target is 50 minutes for a 10K. A 10K is 10 kilometers. 50 ÷ 10 = 5 minutes per kilometer. Your average target becomes 5:00 per kilometer.
1 km: 5:00 elapsed. 2 km: 10:00 elapsed. 3 km: 15:00 elapsed. And so on, adding 5:00 for each additional kilometer, through 10 km: 50:00 elapsed.
The Race Split Planner mode above calculates this automatically for any race distance, target time or pace, and split unit.
RPE stands for rate of perceived exertion. Instead of measuring beats per minute, RPE describes how hard exercise feels. Heart rate and RPE can complement each other. For example, a normal pace may feel unusually difficult on a hot, humid, or fatigued day. That subjective information can matter. RPE is not the same as heart-rate zones, and one should not be presented as a mathematically exact replacement for the other.
A common simple estimate is 220 minus age. For someone age 30: 220 − 30 = 190 bpm. For someone age 50: 220 − 50 = 170 bpm. These are estimates. Actual maximum heart rate can differ. The Pace Calculator clearly distinguishes estimated maximum heart rate from measured maximum heart rate. For people with health concerns or those taking medications that affect heart rate, standard age formulas may be especially limited.
Heart-rate training is useful, but the number on a watch should not be treated as perfect. Heart-rate response may change with heat, dehydration, fatigue, stress, caffeine, altitude, illness, medications, and activity type. Nebraska Medicine also notes that heart-rate response can differ between activities. For example, someone may see a different heart rate while swimming than while running at a similar perceived effort. Use heart rate as one training signal rather than the only piece of information.
No single heart-rate number is dangerous for every person. However, Nebraska Medicine recommends stopping exercise and seeking medical attention when concerning symptoms occur during exercise, such as chest pain or pressure, dizziness or fainting, severe shortness of breath, heart palpitations or an irregular heartbeat, or nausea or vomiting.
A calculator cannot determine whether exercise is medically safe for a specific person. People with cardiovascular disease, significant medical conditions, pregnancy-related concerns, or medications that alter heart rate should discuss appropriate exercise intensity with a qualified healthcare professional.
You should understand more than "my pace is 9:00 per mile." You should understand:
The examples below use the exact same calculation engine as the calculator above. Values are computed live in JavaScript rather than typed in as fixed text, so they will always match what the calculator itself would return for these inputs.
5 miles in 40 minutes.
10K in 60 minutes.
Half marathon target finish time of 2 hours.
Age 40, no measured maximum heart rate supplied.
Current pace 10:00/mile, current heart rate 120 bpm, age 40.
Distance: 5K. Time: 30:00.
What is the approximate pace per kilometer?
Approximately 6:00 per kilometer (30 minutes ÷ 5 km = 6 minutes per km).
I know distance and time and want my pace, or I want to plan finish time and race splits.
I want to calculate detailed training heart-rate targets.
I want to estimate how many calories an activity may use.
I want to estimate my total daily energy needs or calorie target.
I want to solve directly for speed, distance, or time.
Running pace is the amount of time it takes to cover a set distance, usually expressed as minutes per mile or minutes per kilometer.
To calculate running pace, divide your total time by the distance traveled. Dividing 40 minutes by 5 miles gives a pace of 8 minutes per mile.
Divide your total time in minutes by the number of miles covered to get your pace per mile.
Divide your total time in minutes by the number of kilometers covered to get your pace per kilometer.
There is no single good running pace for everyone. A helpful pace depends on your fitness level, experience, and whether the run is meant to be easy, moderate, or hard.
Beginners are generally encouraged to choose a comfortable, conversational pace rather than targeting a specific number, since building consistency matters more than hitting a particular pace early on.
Divide 60 by your pace in minutes per mile to estimate your speed in miles per hour.
Divide 60 by your minutes-per-mile pace. For example, 60 divided by 8 equals 7.5 mph.
Divide your pace per mile, in seconds, by 1.609344 to estimate your pace per kilometer.
Multiply your target pace per mile or kilometer by the race distance to estimate your finish time.
Divide your target finish time by the number of miles or kilometers in the race, then multiply that per-unit pace by each split distance to estimate elapsed time at each point.
The pace needed for a 5K depends on your target finish time. Enter your goal time into the Finish Time or Race Split Planner mode above to see the required pace.
Enter your target 10K finish time into the calculator above to see the average pace per mile or kilometer required to reach it.
Enter your target half marathon finish time into the Race Split Planner to see the required average pace and mile-by-mile or kilometer-by-kilometer splits.
Enter your target marathon finish time into the Race Split Planner to see the required average pace and splits across the full 26.2 miles.
Heart-rate zones are ranges of exercise intensity based on comparing your heart rate to a percentage of your estimated maximum heart rate.
Many common fitness systems use five heart-rate zones, though some systems use three, six, or different percentage boundaries.
Heart-rate zones are commonly estimated by comparing exercise heart rate with a percentage of estimated maximum heart rate, often starting from the 220 minus age formula.
Estimate your maximum heart rate, then multiply it by each zone's percentage range, such as 60 to 70 percent for Zone 2, to estimate that zone's beats-per-minute range.
A common simple estimate is 220 minus your age. A measured maximum heart rate from appropriate testing can be used instead if you have one.
The 220 minus age formula is only a simple estimate. Actual maximum heart rate can differ from the predicted number because of individual physiology, fitness, and other factors.
Zone 1 represents very light exercise such as easy walking, warm-ups, and recovery movement, generally estimated at 50 to 60 percent of maximum heart rate.
Zone 2 generally represents sustainable light-to-moderate aerobic exercise, commonly estimated at 60 to 70 percent of maximum heart rate, and is popular for endurance and cardiovascular fitness goals.
Zone 3 generally represents moderate exercise, commonly estimated at 70 to 80 percent of maximum heart rate, more purposeful than an easy endurance pace but still sustainable.
Zone 4 is generally considered hard exercise, commonly estimated at 80 to 90 percent of maximum heart rate, often associated with tempo and threshold work.
Zone 5 represents very high effort near estimated maximum heart rate, generally above 90 percent, typically used for short, hard intervals rather than sustained training.
Your estimated Zone 2 heart rate is approximately 60 to 70 percent of your maximum heart rate. Use the Pace and Heart Rate Zone Check mode above with your age or measured max heart rate to see your estimated range.
Start from your estimated Zone 2 heart-rate range, then warm up and run at an easy pace while monitoring your heart rate, adjusting pace until your heart rate stays within that range. There is no universal Zone 2 pace that applies to everyone.
There is no universal Zone 2 pace because the same pace can produce different heart-rate responses in different people. Zone 2 is defined by heart rate, not by a specific pace.
Zone 2 is commonly used to support sustainable aerobic endurance because it can usually be maintained for longer periods without the fatigue associated with harder training.
There is no single best zone for everyone. A practical cardiovascular fitness plan often includes a mix of easier aerobic sessions, moderate training, and harder workouts.
No single heart-rate zone guarantees fat loss. Lower-intensity exercise may use a larger percentage of fat as fuel, while higher intensities may burn more total energy, and fat loss depends on overall energy balance over time.
At lower intensities like Zone 2, the body may use a larger percentage of fat as fuel, but this does not mean Zone 2 automatically burns more total fat than higher-intensity exercise.
Yes. Higher-intensity exercise can burn more total energy per session even though a smaller percentage of that energy may come from fat.
Recovery pace should feel intentionally easy, generally corresponding to Zone 1 or low Zone 2 effort rather than a specific universal pace number.
Base endurance pace is the pace that allows you to remain in your intended easy-to-moderate heart-rate range, commonly Zone 2, for an extended period, rather than a fixed number such as 10:00 per mile for everyone.
Tempo pace should feel intentionally harder than an easy endurance run, commonly reaching the upper moderate-to-hard zones, and should be based on your current ability rather than a universal chart.
Interval pace depends on interval length, workout purpose, current fitness, and recovery duration, with shorter intervals generally run faster than longer ones.
Race pace is the average pace you plan or need to maintain to finish a specific race distance in a target time, and it depends heavily on that distance.
Neither measurement is automatically more important. Pace tells you how fast you are moving, while heart rate gives one estimate of how your body is responding, and both can provide useful training information.
Heart rate and pace serve different purposes. Heart rate estimates internal effort while pace measures external speed, and combining both generally gives more useful information than relying on either alone.
Heat, hydration, fatigue, terrain, stress, caffeine, altitude, illness, and medications can all raise heart rate at a given pace, even when fitness has not changed.
The same pace can produce different heart-rate responses in different runners, and even in the same runner on different days, because of fitness, conditions, and individual physiology.
Yes. Heat is commonly associated with a higher heart-rate response at a given pace compared with cooler conditions.
Yes. Hills and other terrain changes can raise heart rate at a given pace compared with flat terrain.
As aerobic fitness improves, many runners can maintain a faster pace at the same heart rate, which can be one indicator of improved fitness.
Yes. Your pace at a given heart rate can change over time with training, though daily conditions such as heat and fatigue can still cause day-to-day variation.
Aerobic exercise relies primarily on energy systems that use oxygen to help produce energy and can generally be sustained for longer periods, such as walking, comfortable jogging, or steady cycling.
Anaerobic exercise relies more heavily on energy systems that do not primarily use oxygen, becoming increasingly important as intensity rises, such as during hard intervals and sprint-like efforts.
RPE stands for rate of perceived exertion, a subjective scale describing how hard exercise feels rather than a direct measurement like heart rate.
Heart rate is a measured number of beats per minute, while RPE is a subjective description of effort. They often relate to each other but are not interchangeable measurements.
Yes. Certain medications, including those that affect heart-rate response, may make standard heart-rate formulas and zone estimates less reliable.
No single heart-rate number is dangerous for everyone, but you should stop exercise and seek appropriate medical attention if you experience symptoms such as chest pain or pressure, dizziness or fainting, severe shortness of breath, heart palpitations, or nausea.