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Free VO2 Max Calculator 📈

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Measure first thing in the morning before getting up, or check your smartwatch.

Maximum Heart Rate

Auto-calculated: 220 − 35 = 185 bpm

Fill in the fields above to see your estimated VO2 Max and fitness rating instantly.

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The HIF Logic Free VO2 Max Calculator provides two validated estimation methods: the Resting Heart Rate Method (VO2 Max = 15.3 × (Max HR ÷ Resting HR), based on Uth et al. 2004) and the Cooper 12-Minute Run Test (VO2 Max = (Distance in meters − 504.9) ÷ 44.73, developed by Dr. Kenneth Cooper 1968). Results are expressed in mL/kg/min — the standard unit for maximal oxygen uptake. Fitness ratings (Poor, Fair, Good, Excellent, Superior) are calibrated against ACSM normative data and adjusted for both age group and biological sex. The resting heart rate method accepts auto-calculated max HR (220 − Age) or a user-supplied measured max. Cooper test supports input in miles or meters with automatic unit conversion. All results update live on every input change. VO2 Max context: sedentary adults average 30–40 mL/kg/min; trained recreational runners 45–55; elite endurance athletes 70–90+. Keywords: vo2 max calculator, calculate aerobic capacity, cooper test calculator, vo2 max resting heart rate formula, cardiorespiratory fitness test, aerobic capacity estimator, cooper 12 minute run calculator, vo2 max fitness rating, ACSM fitness norms, VO2 max without lab test, resting heart rate vo2 max, aerobic fitness score, endurance fitness calculator, max oxygen uptake calculator, vo2max normal range by age. Free, no account required, works on all devices.