Heart Rate Zones Calculator
A scientifically accurate cardio intensity analysis tool designed to help users determine their training zones based on age and resting heart rate.
Enter your details to see your heart rate zones.
The Calclytix Heart Rate Zones Calculator is a scientifically accurate cardio intensity analysis tool designed to help users determine their training zones based on age, resting heart rate, maximum heart rate, fitness level, and VO₂ max. Using validated formulas like Karvonen, Zoladz, Tanaka, and the traditional Max Heart Rate method, this calculator delivers personalized BPM ranges for all five training zones—from recovery to peak performance.
Ideal for runners, cyclists, gym users, weight-loss enthusiasts, heart patients (with medical clearance), and athletes, the tool provides actionable insights into fat-burning zones, endurance zones, and high-intensity training ranges. It also includes lactate threshold mode, VO₂ max adjustments, weekly training recommendations, charts, and a complete cardio workout planner.
The Calclytix Heart Rate Calculator helps users train smarter, avoid overtraining, and achieve their fitness goals with precision. Whether you're building endurance, improving cardiovascular fitness, or optimizing fat loss, this calculator provides a complete heart-rate-based training system.