Youth Athlete Training Heart Rate Zone Calculator
Calculate personalized heart rate training zones for youth athletes (ages 6–18) using the Karvonen (Heart Rate Reserve) method. Enter age and resting heart rate to get five training zones.
Formula
Step 1 – Maximum Heart Rate (Tanaka et al., 2001):
MHR = 208 − (0.7 × Age)
Step 2 – Heart Rate Reserve (Karvonen Method):
HRR = MHR − Resting Heart Rate (RHR)
Step 3 – Target Heart Rate for each zone boundary:
Target HR = (HRR × Intensity%) + RHR
Zone Intensity Ranges (% of HRR):
Zone 1: 50–60% | Zone 2: 60–70% | Zone 3: 70–80% | Zone 4: 80–90% | Zone 5: 90–100%
Assumptions & References
- Maximum heart rate is estimated using the Tanaka formula (MHR = 208 − 0.7 × age), which is more accurate for youth and older populations than the classic "220 − age" formula.
- Heart rate zones are calculated using the Karvonen (Heart Rate Reserve) method, which accounts for individual fitness level via resting heart rate.
- Valid age range is 6–18 years; valid resting heart rate range is 30–100 bpm.
- References: Tanaka H, Monahan KD, Seals DR. Age-predicted maximal heart rate revisited. J Am Coll Cardiol. 2001;37(1):153–156. | Karvonen MJ, Kentala E, Mustala O. The effects of training on heart rate. Ann Med Exp Biol Fenn. 1957;35(3):307–315.