The Maximum Heart Rate Calculator estimates the highest number of times your heart can safely beat in one minute during intense physical activity. It uses the widely accepted formula MHR = 220 − Age, which provides a simple and effective way to determine your upper heart rate limit. Knowing your maximum heart rate helps you plan safe and efficient workouts by setting appropriate intensity zones for fat burning, endurance, and cardiovascular training. Although individual results may vary based on health, fitness level, and genetics, this tool offers a useful guideline for monitoring and improving exercise performance.