Maximum Heart Rate Calculator
Maximum Heart Rate Calculator uses the Tanaka equation, 208 − 0.7 × age, to estimate a population-average maximum heart rate. Individual measured values can differ materially, and medication, cardiovascular disease, testing conditions, fitness, and other factors affect interpretation. Do not use an age prediction to diagnose a condition or override medical exercise guidance.
Runs locally — files stay on your deviceWhat is the Tanaka maximum-heart-rate formula?
Estimated maximum heart rate equals 208 minus 0.7 times age.
Formula: HRmax = 208 − 0.7 × age
Age predicts a group average, not an individual maximum
The Tanaka equation was developed from a meta-analysis and laboratory validation in healthy adults. Regression describes the average relationship between age and measured HRmax; it does not place every person exactly on that line.
How it works
Enter age to calculate the equation result. Treat it as a rough reference only. People with symptoms, cardiovascular conditions, pregnancy, medications affecting heart rate, or clinical exercise goals should obtain appropriate professional guidance.
Key concepts
Prediction error exists at the individual level
A regression can describe a population well while still differing by many beats per minute for a particular person.
Medications and conditions matter
Beta blockers and multiple cardiovascular or autonomic factors can alter heart-rate response.
When to use it
- Check the arithmetic of the Tanaka age equation.
- Compare age-based population estimates.
- Understand why predicted maximum tends to decrease with age.
When not to use it
- Do not diagnose fitness or heart health from the estimate.
- Do not use it to override a clinician-supervised exercise limit.
- Do not assume wearable peak readings or equation values are automatically true maxima.
Worked examples
Age forty
- Input
Age 40- Expected output
180 bpm estimate
208 − 0.7×40 = 180.
Age sixty
- Input
Age 60- Expected output
166 bpm estimate
The equation decreases by 0.7 bpm per year.
Observed maximum differs
- Input
Measured supervised test not equal to prediction- Expected output
Use clinical interpretation
Individual variation is expected.
Common mistakes
Treating predicted HRmax as a target to reach
Maximum is not an everyday training goal. Correction: Follow an appropriate training or clinical plan.
Assuming one formula fits medication use
Some medications change heart-rate response. Correction: Ask a qualified clinician for individualized guidance.
Calling a wearable peak a diagnosis
Sensors and exercise conditions have limitations. Correction: Seek medical evaluation for symptoms or concerns.
Best practices
- Use the value only as a rough reference.
- Consider medication and medical history with professional guidance.
- Stop exercise and seek appropriate care for concerning symptoms.
Related operations and differences
BMI Calculator
Choose BMI Calculator when you need to estimate body mass index locally for general information.; use Maximum Heart Rate Calculator specifically for max heart rate.
Waist-to-Height Ratio Calculator
Choose Waist-to-Height Ratio Calculator when you need to calculate waist circumference divided by height.; use Maximum Heart Rate Calculator specifically for max heart rate.
Water Intake Calculator
Choose Water Intake Calculator when you need to estimate a simple daily water baseline from body weight.; use Maximum Heart Rate Calculator specifically for max heart rate.
BMR Calculator
Choose BMR Calculator when you need to estimate basal metabolic rate using the Mifflin-St Jeor formula.; use Maximum Heart Rate Calculator specifically for max heart rate.
Running Pace Calculator
Choose Running Pace Calculator when you need to calculate average minutes per kilometer.; use Maximum Heart Rate Calculator specifically for max heart rate.
TDEE Calculator
Choose TDEE Calculator when you need to estimate daily energy use from a BMR and activity factor.; use Maximum Heart Rate Calculator specifically for max heart rate.
Limitations and privacy
- This is a population-based estimate for general information, not a diagnosis, treatment plan, or individualized medical or nutrition advice.
- Individual prediction error can be substantial.
- The equation does not account for medication, disease, testing protocol, or sensor accuracy.
Inputs and estimates remain in this browser. Toolbox does not store or transmit these health-related values.
Frequently asked questions
Is 208 − 0.7×age exact for me?
No. It predicts a population average and individuals can differ substantially.
Is maximum heart rate a training target?
No. It is not a routine target to reach; training guidance should be appropriate to the individual.
Can medication change heart-rate response?
Yes. Discuss exercise targets with a qualified clinician when medication or health conditions apply.
Why does this differ from 220 − age?
It uses the Tanaka equation derived from later meta-analysis and validation research.