Sports Calculators
Max Heart Rate Calculator
Estimate your maximum heart rate based on age.
Enter the values and review the result.
Calculation assumptions
- *Max heart rate formulas are age-based estimates and can be off for individuals.
- *Heart-rate response varies by fitness level, medication, heat, stress, sleep, and health status.
- *Results are estimates, not medical or coaching advice.
Enter your values and press Calculate.
Results and breakdowns will appear here after a valid calculation.
How Max Heart Rate is Estimated
Max heart rate formulas estimate the highest heart rate a person might reach during intense exercise. Common options include Fox (220 - age), Tanaka (208 - 0.7 x age), and Gulati (206 - 0.88 x age).
Example: for age 30, the Fox formula estimates 190 BPM. The Tanaka formula estimates about 187 BPM, so different formulas can produce different planning numbers.
Safety notes and common mistakes
Max heart rate formulas are not exact. Lab testing, wearable readings, medication, heat, fatigue, stress, sleep, and health status can all affect heart-rate response.
- Do not treat the estimate as a safe limit for everyone.
- Do not ignore symptoms such as chest pain, dizziness, or fainting.
- Do not assume every formula applies equally to every person.
- Use professional guidance before intense exercise if you have heart conditions, medication use, pregnancy, or medical concerns.
Transparency note
Accuracy and limitations
Calzivo tools are built for practical estimates, conversions, and checks. Some tools use standard formulas or simplified assumptions, and results can be affected by input accuracy, rounding, units, local rules, or changing official requirements.
Results depend on the values you enter and any simplified assumptions used by the tool. Verify important results before making decisions or submitting official information.
How to Use This Tool
Use these steps to enter the right inputs and interpret the result correctly.
Enter your current age.
Select a formula (Fox is the most common, Tanaka is considered more accurate).
The tool will estimate your maximum heart rate in beats per minute (BPM).
Related Tools
Other helpful tools in the Sports Calculators category.
Heart Rate Zones Calculator
Find your target heart rate zones for training.
Pace Calculator
Calculate your running or cycling pace.
Race Predictor
Predict your race times for various distances.
Calorie Calculator
Estimate how many calories you need daily.
Related Guides
Background reading and explanations related to Max Heart Rate Calculator.
Frequently Asked Questions
Common questions about Max Heart Rate Calculator and how to read the result.
How accurate are these formulas?
These are estimates. The only way to find your true max HR is through a supervised clinical stress test.
Which max heart rate formula should I use?
Fox is simple and common, while Tanaka and Gulati are alternative age-based estimates. None is exact for every person.
Can max heart rate vary between people of the same age?
Yes. Genetics, fitness, medication, health status, heat, fatigue, and testing method can all affect heart-rate response.
Is max heart rate the same as training zones?
No. Max heart rate is one estimate. Training zones use that estimate, or heart-rate reserve, to create intensity ranges.
Can I use this for medical decisions?
No. It is a fitness estimate and should not be used to diagnose, treat, prevent, or manage a medical condition.
When should I get professional guidance?
Use professional guidance before intense exercise if you have chest pain, dizziness, heart conditions, medication use, pregnancy, or medical concerns.