VO₂ Max Estimator
The missing vital sign — in 30 seconds.
Enter your age, sex, and resting heart rate. We combine the Tanaka (2001) HR-max formula with the Uth–Sørensen (2004) HR-ratio estimate to return a submax VO₂ Max, then place it against FRIEND (Kaminsky 2015) age/sex percentiles. Not a diagnostic device.
Results
VO₂ Max
44.7
mL/kg/min
Peak METs
12.8
METs
HR max (used)
179
bpm
Absolute VO₂
—
add weight
FRIEND percentile (male, age 42)
74th
Above average
025507599
Mortality context
≈30% lower all-cause mortality vs. bottom quintile.
Formulas: HRmax = 208 − 0.7 × age (Tanaka 2001) · VO₂ Max ≈ 15 × (HRmax / HRrest) (Uth–Sørensen 2004) · Percentiles interpolated from FRIEND (Kaminsky 2015). Educational — not a diagnostic device.