Max Heart Rate Calculator
Estimate maximum heart rate and training zones.
Results update as you type.
This calculator provides estimates based on population research. Results are not medical advice. Consult a qualified healthcare provider before making health or nutrition decisions.
How it works
Maximum heart rate is the highest number of beats per minute your heart can reach during all-out effort, and it is the anchor for every heart-rate training zone. A max heart rate calculator estimates that ceiling from your age using the familiar 220-minus-age formula, a rule of thumb that has guided exercisers, coaches and cardiac rehab programmes for decades. Once you know your maximum, you can express any workout intensity as a percentage of it, which is far more meaningful than a raw pulse figure. This tool also marks out two practical anchors: the lower end of the moderate range near 50 percent, often labelled the fat-burning zone, and 85 percent, the upper edge of vigorous cardio training. Training between these points builds aerobic fitness efficiently while keeping effort sustainable, whereas brief intervals above them push anaerobic capacity. Endurance athletes, gym-goers and anyone using a heart-rate monitor rely on a max heart rate calculator to set targets that match their goals, from easy recovery jogs to hard threshold sessions. It is important to understand that 220-minus-age is a population average with a wide margin of error, easily ten to fifteen beats in either direction, because true maximum varies with genetics and fitness, not just age. For a precise figure, a supervised maximal exercise test is the gold standard, and anyone with a heart condition should seek medical guidance before training near their limit.
Max heart rate = 220 − age; zones at 50% and 85% of that maximum
The 220-minus-age formula works because maximum heart rate declines steadily with age as the heart's pacemaker cells and responsiveness change, falling by roughly one beat per year. Subtracting age from 220 approximates that trend for the average adult. Training zones are then simple percentages of this maximum: multiplying by 0.5 and 0.85 marks the moderate and vigorous boundaries that define effective aerobic exercise.
Source:Standard health guidance
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter age.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
Maximum heart rate updates instantly as you type — no button to press.
Frequently asked questions
How accurate is the 220-minus-age formula?
It is a useful average but far from precise for any individual. Studies show real maximum heart rate can differ from the estimate by ten to fifteen beats per minute in either direction, because it depends on genetics and physiology more than age alone. Alternative formulas such as 208 minus 0.7 times age fit large populations slightly better. For everyday training the simple version is fine, but do not treat the exact number as gospel.
What is the fat-burning heart rate zone?
The fat-burning zone is roughly 50 to 70 percent of your maximum heart rate, a moderate intensity where the body draws a higher proportion of energy from fat. It is real, but the name can mislead: higher-intensity exercise burns more total calories and often more total fat overall, even if a smaller percentage comes from fat. The zone is genuinely useful for building an aerobic base and for longer, sustainable sessions.
Why should I train using heart rate zones?
Heart-rate zones let you match effort to purpose objectively rather than by feel alone. Easy zones build endurance and aid recovery, moderate zones improve aerobic capacity, and hard zones raise threshold and speed. Training by zone helps prevent the common trap of going too hard on easy days and too easy on hard days. It also lets you gauge progress, since a lower heart rate at the same pace signals improving fitness.
Does a lower resting heart rate mean I am fitter?
Often, yes. A lower resting heart rate generally reflects a stronger, more efficient heart that pumps more blood per beat, which is common in trained endurance athletes whose resting rates can dip below 50. That said, resting rate is also influenced by genetics, stress, sleep, caffeine and medication, so it is only one signal. A resting rate that is unusually low with symptoms, or unusually high, is worth discussing with a doctor.
Should I see a doctor before training at high intensity?
If you have a heart condition, high blood pressure, diabetes, are over 40 and previously inactive, or notice chest pain, dizziness or breathlessness, you should consult a doctor before pushing near your maximum heart rate. High-intensity exercise is safe and beneficial for most people, but a medical check first is sensible if any risk factors apply. A supervised exercise test also gives a far more accurate personal maximum than any age-based formula.