Target Heart Rate Zones Calculator
Calculate cardiovascular training zones (Zone 1 to Zone 5) using the Karvonen Heart Rate Reserve formula for aerobic efficiency and endurance.
Target Heart Rate Zones Calculator
Calculate cardiovascular training zones (Zone 1 to Zone 5) using the Karvonen Heart Rate Reserve formula for aerobic efficiency and endurance.
How to Use Target Heart Rate Zones Calculator
1. Enter Age & Resting Heart Rate
Input your current age and optional resting pulse (bpm) to calibrate the Karvonen heart rate reserve formula.
2. Calculate 5 Targeted Training Zones
Computes your maximum heart rate (HRmax) and divides training intensity into 5 distinct physiological zones.
3. Target Specific Workout Goals
Target Zone 2 (60–70%) for endurance and mitochondrial fat burn, Zone 4 for anaerobic threshold, or Zone 5 for peak VO2 max.
How This Utility Works
Precision cardiovascular heart rate training zones calculator. Calculate Zone 1 through Zone 5 target beats per minute (BPM) using the Karvonen Heart Rate Reserve (HRR) and Tanaka formulas to optimize Zone 2 aerobic base, tempo, and VO2 max training.
Your body metrics, age, weight, and fitness statistics remain exclusively on your device. No health data is stored in remote databases.
Frequently Asked Questions
Why is Zone 2 cardio training so popular?
Zone 2 training (60-70% HRR) stimulates mitochondrial biogenesis, enhances fatty acid oxidation, and builds aerobic base endurance without accumulating systemic fatigue.