sci.training-heart-rate-Karvonen Calculator
Calculates training heart rate using the Karvonen formula: HR_target = (HR_max − HR_rest) × intensity% + HR_rest. 70% intensity for a 25-year-old (HR_max = 195) with resting HR 55 bpm: HR_target = 140 bpm — zone 2 training (60–70%) maximises aerobic adaptation with minimal recovery time.
Inputs
- Hr Max Bpm
- Beats per minute. Normal resting: 60–100. During vigorous exercise: 150–185+ depending on fitness and age.
- Hr Rest Bpm
- Beats per minute at complete rest (best measured first thing in the morning). Average adult: 60–100 bpm. Trained athletes often 40–60.
- Intensity Pct
- Reference formula or conversion factor shown for context.
Results
- target heart rate THR (bpm)
- Recommended training heart rate range (50–85% of estimated max HR). Training in this zone improves cardiovascular fitness without excessive strain.
- heart rate reserve HRR (bpm)
- The value at the specified point or condition.
- aerobic zone (60–80% HRR)
- Sample size or count used in the calculation.
- Karvonen: THR = HR_rest + I·(HR_max − HR_rest)
- Sample size or count used in the calculation.
- HR_max estimate
- The value at the specified point or condition.
- zone classification
- Category assigned based on where the computed value falls on a defined scale. Check which standard or guideline defines these boundaries.
training heart reserve karvonen rate