Target Heart Rate Calculator
Calculate your specific exercise target heart rate ranges using both the Karvonen Heart Rate Reserve (HRR) and % Max HR methods.
Enter Your Parameters
Understanding Your Result
The calculation generated by this tool provides an evidence-based assessment derived from established physiological and clinical equations. Use this measurement as an educational indicator alongside broader lifestyle variables, including overall dietary quality, resistance training, cardiovascular endurance, and routine medical checkups.
Mathematical Formula & Scientific Methodology
Karvonen Formula: THR = ((Max HR - Resting HR) × % Intensity) + Resting HR. This provides greater individual customization than basic % Max HR alone.
Step-by-Step Example Calculation
Clinical Limitations & Nuances
Requires an accurate baseline resting heart rate recorded under resting conditions.
Frequently Asked Questions
Why is the Karvonen formula more accurate than percent max HR?
Because it factors in your baseline resting heart rate, giving a true reflection of your usable heart rate reserve (HRR).
What target heart rate is best for general aerobic fitness?
Targeting 60% to 75% of your Heart Rate Reserve develops mitochondrial density, capillary growth, and sustainable aerobic conditioning.
Dr. Sarah Mitchell, MS, RD
Exercise Physiologist & Clinical Dietitian
Formulas and educational copy on Body Metric Hub are researched and verified by certified clinical nutritionists and exercise physiology specialists.