💓 Heart Rate Calculator
Find your estimated maximum heart rate and target exercise zones based on your age.
What is maximum heart rate?
Maximum heart rate (max HR) is roughly the fastest your heart can safely beat during intense exercise. It’s commonly estimated with a simple age-based formula and used to define target training zones for different exercise intensities.
The formula
This calculator uses the classic formula: max HR = 220 – age. Training zones are then shown as percentage ranges of that max HR, from light activity (50-60%) up to maximum effort (85-100%), following the ranges commonly recommended by fitness organizations.
This is a general estimate for fitness planning, not a precise medical measurement — individual max heart rate can vary by 10-20 bpm from this formula. Consult a qualified professional before starting a new exercise program, especially with any heart condition.