Target Heart Rate Zone Calculator
Find your ideal training intensity. Enter your age for standard zones, or add your resting heart rate for the more precise Karvonen formula.
Max HR (220-age)Karvonen Formula5 Training ZonesLab Max HR Override
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Heart Rate Zone Chart
| Zone | % of Max HR | Purpose |
|---|---|---|
| Warm-Up | 50–60% | Recovery & warm-up |
| Fat Burn | 60–70% | Low-intensity aerobic |
| Cardio | 70–80% | Cardiovascular fitness |
| Hardcore | 80–90% | Anaerobic performance |
| Peak | 90–100% | Maximum effort |
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