HomeFree Calculators — Free Online Calculator ToolsHeart Rate Zone Calculator Heart Rate Zone Calculator ???? Heart Rate Zone Calculator Find your training zones for effective workouts Age Resting Heart Rate (bpm, optional) Calculate Max Heart Rate (estimated) Training Zones Zone% of Max HRBPM RangeBenefit ⚠️ Max heart rate is estimated using the formula 220 – age, which is approximate. Individual max heart rate can vary by ±10-15 bpm. Consult your doctor before starting a new exercise program, especially if you have heart conditions.