Heart Rate Training Zone Calculator
Your Personalized Training Zones
Estimated Max Heart Rate: bpm
Heart Rate Reserve (HRR): bpm
| Zone | Intensity | Target Range (BPM) |
|---|---|---|
| Zone 1 (Recovery) | 50% – 60% | |
| Zone 2 (Aerobic) | 60% – 70% | |
| Zone 3 (Tempo) | 70% – 80% | |
| Zone 4 (Threshold) | 80% – 90% | |
| Zone 5 (Anaerobic) | 90% – 100% |
How to Calculate Your Heart Rate Training Zones
Understanding your heart rate zones is the key to training smarter, not harder. By targeting specific heart rate ranges, you can ensure your body is working at the correct intensity to meet your fitness goals, whether that is fat loss, cardiovascular endurance, or peak athletic performance.
The Karvonen Formula Explained
While the simple formula (220 minus age) gives you a rough estimate of your Maximum Heart Rate (MHR), this calculator uses the more accurate Karvonen Formula. This method incorporates your Resting Heart Rate (RHR) to calculate your Heart Rate Reserve (HRR), which reflects your current fitness level more precisely.
The Math:
1. Max Heart Rate (MHR) = 220 – Age
2. Heart Rate Reserve (HRR) = MHR – Resting Heart Rate
3. Training Zone = (HRR x Intensity%) + Resting Heart Rate
1. Max Heart Rate (MHR) = 220 – Age
2. Heart Rate Reserve (HRR) = MHR – Resting Heart Rate
3. Training Zone = (HRR x Intensity%) + Resting Heart Rate
Understanding the 5 Training Zones
- Zone 1 (50-60%): Very light intensity. Used for warm-ups, cool-downs, and active recovery.
- Zone 2 (60-70%): Light intensity. This is the "fat-burning" zone where you build basic endurance. You should be able to hold a full conversation.
- Zone 3 (70-80%): Moderate intensity. Improves aerobic capacity and cardiovascular strength. Conversation becomes difficult.
- Zone 4 (80-90%): Hard intensity. Improves speed and anaerobic capacity. You are breathing heavily and can only speak in short phrases.
- Zone 5 (90-100%): Maximum effort. Used for interval training and sprints. Only sustainable for very short periods.
Realistic Calculation Example
Imagine a 40-year-old individual with a resting heart rate of 70 BPM. Using the formulas above:
- MHR: 220 – 40 = 180 BPM
- HRR: 180 – 70 = 110 BPM
- Zone 2 Target (60%): (110 x 0.60) + 70 = 136 BPM
- Zone 2 Target (70%): (110 x 0.70) + 70 = 147 BPM
This individual's Zone 2 range for aerobic base building would be between 136 and 147 beats per minute.