Target Heart Rate Calculator
Calculate specific target heart rates for cardio training intensities
Input Parameters
Real-time calculation updates dynamically as you adjust inputs. Values remain strictly local on your device.
Target Heart Rate (70% Intensity)Karvonen HRR
149bpm
Range: 146 to 152 bpm
Estimated HRmax
186bpm
Heart Rate Reserve
124bpm
Clinical Responsibility Note: This calculation provides statistical estimations for informational and educational purposes only. It is not an individualized medical diagnosis or clinical prescription.
Mathematical Formula & Scientific Methodology
Formula: Target HR (Karvonen HRR)
Target HR = (HRR × % Intensity) + HRrestNormalizes cardiovascular demand across individuals with differing resting heart rates.
Model Assumptions
- Resting HR represents true baseline
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| % Intensity | Fractional training intensity | dimensionless |
Scientific Limitations
- High ambient temperature increases heart rate at identical workload
Peer-Reviewed Scientific Citations
The effects of training on heart rate; a longitudinal study (1957)
Karvonen MJ, Kentala E, Mustala O (1957) — Annales Medicinae Experimentalis et Biologiae Fenniae, 35(3), 307-315
Key Finding: Target HR = ((HRmax - HRrest) * %Intensity) + HRrest. Uses Heart Rate Reserve (HRR) to individualize training zones.
Frequently Asked Questions
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