Max Heart Rate Calculator
Estimate maximum heart rate from age with the Fox and Tanaka formulas.
Result
184 bpm
What is maximum heart rate?
Maximum heart rate is the highest heart rate reached during maximal effort.
Why formulas differ
Fox uses 220 − age. Tanaka uses 208 − (0.7 × age). Each describes a population trend, not an exact personal limit.
Estimated vs measured max HR
Measured maximum heart rate can differ substantially from an age-based estimate. Do not treat an estimate as a required exercise target.
Using max HR for training zones
Use an estimate as a starting point for broad zones and adjust with measured data, perceived effort, and appropriate professional guidance.