Estimate your target heart rate based on age and exercise intensity to identify approximate moderate or vigorous workout zones measured in beats per minute.
Target heart rate = Resting HR + Intensity × (Maximum HR − Resting HR)The result is based on the entered workload, time, distance, repetitions, body weight or heart-rate assumptions. Device accuracy, terrain, temperature, technique, fitness level and recovery can cause real performance to differ.
The Target Heart Rate Calculator is designed to estimate an exercise heart-rate zone by considering just your age along with your level of work-out exertion. The target range is derived in a beats per minute (bpm) and is meant to provide you with a quick comparison as to whether your work out may be moderate or vigorous.
The calculator normally takes the age-predicted maximum heart rate and an intensity percentage, to estimate an individual target zone. These are generic estimates not medical boundaries.
Your exercise heart rate can be influenced by your fitness level, medications, health, temperature, stress, and your own unique heart-rate response.
Enter the requested information accurately to receive an estimated target heart-rate range for exercise.
When comparing the calculated range with your actual exercise heart rate, use a consistent measurement method. A wearable heart-rate monitor, chest strap, fitness tracker, or manual pulse check may be used, although measurement accuracy can vary between methods and devices.
The Target Heart Rate Calculator first estimates your maximum heart rate based on age. It then multiplies that estimate by an exercise-intensity percentage to produce an approximate target heart-rate zone.
A widely used age-based method estimates maximum heart rate as 220 minus age. Moderate-intensity activity is commonly represented by approximately 50% to 70% of estimated maximum heart rate, while vigorous activity is commonly represented by approximately 70% to 85%.
Because the calculation is based on population averages, your actual maximum heart rate may be higher or lower than the estimated value.
A commonly used formula for estimating maximum heart rate is:
Estimated Maximum Heart Rate = 220 − Age
The target heart rate can then be estimated using:
Target Heart Rate = Estimated Maximum Heart Rate × Exercise Intensity
Where:
For example, 60% intensity is entered into the calculation as 0.60.
Suppose a 40-year-old adult wants to estimate a moderate-intensity target heart-rate range.
Step 1: Estimate maximum heart rate
220 − 40 = 180 bpm
Step 2: Calculate 50% of maximum heart rate
180 × 0.50 = 90 bpm
Step 3: Calculate 70% of maximum heart rate
180 × 0.70 = 126 bpm
The estimated moderate-intensity target heart-rate range is approximately 90 to 126 bpm.
If the same person wanted to estimate a vigorous-intensity range using 70% to 85%:
180 × 0.70 = 126 bpm
180 × 0.85 = 153 bpm
The estimated vigorous-intensity range would therefore be approximately 126 to 153 bpm.
Your result represents an estimated exercise heart-rate range rather than an exact heart rate you must maintain. It can be used as one way to gauge aerobic exercise intensity.
| Exercise Intensity | Approximate Percentage of Maximum Heart Rate | General Meaning |
|---|---|---|
| Moderate | 50%–70% | Approximate heart-rate range commonly associated with moderate aerobic activity |
| Vigorous | 70%–85% | Approximate heart-rate range commonly associated with vigorous aerobic activity |
A result within one of these ranges does not automatically mean that the exercise intensity is appropriate for every individual. Exercise experience, cardiovascular fitness, medications, medical conditions, environmental conditions, and individual physiology can change heart-rate response.
The target range should therefore be treated as a practical estimate rather than a strict threshold between safe and unsafe exercise.
Age directly influences this calculation because it is used to estimate maximum heart rate. As age increases, the age-predicted maximum heart rate generally decreases.
People of the same age can have different actual maximum heart rates. The formula provides a population-based estimate and cannot measure your individual physiological maximum.
Training status and cardiovascular conditioning can affect how your heart responds to physical activity. Two people performing the same exercise may have different heart rates and perceived levels of effort.
Certain medications can raise or lower heart rate or change the heart's response to exercise. People taking medications that affect heart rate may need individualized guidance rather than relying solely on a standard age-based target zone.
Cardiovascular conditions, abnormal heart rhythms, and other medical factors can influence exercise heart rate. A general calculator cannot account for individual medical circumstances.
Heat, humidity, altitude, dehydration, and other environmental conditions may affect heart rate during physical activity even when exercise intensity remains similar.
Wearable devices and manual pulse measurements are not always perfectly accurate. Device placement, movement, sensor contact, timing, and counting errors may influence the heart-rate reading.
The Target Heart Rate Calculator is designed for informational estimation. Important limitations include:
If you have a cardiovascular condition, take medication that affects heart rate, are recovering from a significant illness or procedure, or have been given exercise restrictions, personalized guidance from an appropriately qualified healthcare professional may be more appropriate than a general calculator estimate.
A target heart rate is an estimated exercise heart-rate range used to help gauge workout intensity. It is usually expressed in beats per minute and calculated as a percentage of estimated maximum heart rate.
A commonly used estimate is 220 minus your age. For example, a 30-year-old would have an estimated maximum heart rate of approximately 190 bpm. This is an age-based prediction rather than a direct measurement.
A commonly used estimate is approximately 50% to 70% of maximum heart rate for moderate-intensity exercise and approximately 70% to 85% for vigorous-intensity exercise. Individual circumstances can affect what level is appropriate.
Bpm stands for beats per minute. It describes how many times your heart beats during one minute.
You can use a wearable heart-rate monitor, fitness tracker, chest strap, exercise-machine sensor, or manual pulse measurement. Device and measurement accuracy can vary.
The calculator uses an age-based estimate, while your actual heart-rate response depends on individual physiology, fitness, exercise type, medications, stress, temperature, hydration, and other factors.
Calculate using a recent, representative effort rather than a personal best from a different condition. Recalculate when distance, duration, load or body weight changes materially.
Your target heart rate is just one method for estimating exercise intensity. While it can help track cardio workouts, this number should be combined with your perception of exercise effort and any advice given.
You may keep track of your heart rate with a fitness tracker or health band, chest strap, smartwatch, on an exercise machine, or manually. To take a manual reading, count your pulse for 30 seconds and doubling it should give you an approximation of beats per minute.
Maximum heart rate is an estimated upper limit for heart rate during intense exercise, while target heart rate represents a percentage of that estimated maximum. Target zones are commonly used to describe moderate and vigorous exercise intensity.
The calculated range is not a personalized medical limit. If you have a heart condition, take medication that affects heart rate, or have been given exercise restrictions, individualized guidance from a qualified healthcare professional may be more appropriate.