Heart Rate Zone Calculator
Visualize your 5 training zones
Personal Information
Fitness Level
Your 5 Heart Rate Zones
Zone Details (Click a zone to select)
Workout Planner for Selected Zone
Zone Ranges
HR Zones by Age
Training Zone Tips
Zone 1 - Recovery
Use for warm-up, cool-down, and active recovery days
Zone 2 - Base Building
Spend most training time here for endurance foundation
Zone 4-5 - High Intensity
Limit to 1-2 sessions per week with adequate recovery
Monitor HR
Use a chest strap or wrist monitor for accurate readings
Understanding Heart Rate Zones
Heart rate zones are specific ranges of heart rate that correspond to different training intensities and physiological adaptations. Training in the right zone helps you achieve specific fitness goals, whether that's building endurance, burning fat, improving speed, or maximizing performance. The 5-zone system is the most widely used approach in endurance sports and fitness training.
The Five Training Zones
Each zone serves a specific training purpose:
- Zone 1 - Very Light (50-60% of HRR): Warm-up, recovery, and easy activity. Perfect for beginners and rest days. You can hold a conversation easily.
- Zone 2 - Light (60-70%): Fat burning zone and aerobic base building. Your body primarily uses fat for fuel. You can talk comfortably.
- Zone 3 - Moderate (70-80%): Aerobic training zone. Improves cardiovascular fitness and aerobic capacity. Conversation becomes difficult.
- Zone 4 - Hard (80-90%): Anaerobic threshold zone. Improves speed and performance. You can only speak a few words at a time.
- Zone 5 - Maximum (90-100%): Maximum effort zone. Short intervals only. You cannot speak at all. For elite athletes.
Heart Rate Reserve (HRR)
Heart Rate Reserve is the difference between your maximum and resting heart rate:
- Formula: HRR = Maximum HR - Resting HR
- Example: If Max HR is 190 and Resting HR is 70, HRR = 120 bpm
- Karvonen Method: Uses HRR for more accurate training zones
- Zone Calculation: Zone HR = (HRR × % intensity) + Resting HR
- Why it matters: Accounts for individual fitness levels and resting heart rate
Max HR Formulas
Three main formulas are used to estimate maximum heart rate:
- Fox Formula (220 - Age): The most widely used formula, simple and easy to remember. Works well for general population but less accurate for older adults.
- Tanaka Formula (208 - 0.7 × Age): More accurate for older adults, based on comprehensive research with 514 subjects. Recommended for most people.
- Gulati Formula (206 - 0.88 × Age): Specifically designed for women, more accurate for female athletes based on research with women.
Using This Calculator
Follow these steps:
- Step 1: Choose your preferred Max HR formula (Fox, Tanaka, or Gulati)
- Step 2: Enter your gender, age, and resting heart rate
- Step 3: Select your fitness level
- Step 4: Click "Calculate" to see your 5 heart rate zones
- Step 5: Click on any zone in the visual bar to see details
- Step 6: Review workout recommendations for your selected zone
- Step 7: Use the zones to guide your training intensity
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