VO2 Max Calculator

What is VO2 Max?

VO2 max (maximal oxygen uptake) is the maximum rate at which your body can consume oxygen during intense exercise, measured in millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). It is widely considered the gold standard for measuring cardiorespiratory fitness and aerobic endurance capacity.

A higher VO2 max means your cardiovascular system can deliver more oxygen to your working muscles, allowing you to sustain higher intensities for longer. Elite male distance runners typically have VO2 max values of 70-85 ml/kg/min, while elite female runners range from 60-75 ml/kg/min.

Estimation Methods

Race Result (Daniels & Gilbert)

The most accurate non-lab method. It calculates the oxygen cost of running at your race velocity and the fraction of VO2 max you can sustain for that duration, then derives your VO2 max. This is the formula behind the well-known VDOT tables used by coach Jack Daniels. For best results, use a recent all-out race effort on a flat course.

Cooper Test

Developed by Dr. Kenneth Cooper in 1968, this field test requires running as far as possible in exactly 12 minutes on a flat surface. The formula VO2max = (distance - 504.9) / 44.73 gives a reasonable estimate. It is simple to perform but requires a maximal effort to be accurate.

Resting Heart Rate (Uth et al.)

The simplest method — it requires only your maximum and resting heart rates. The formula VO2max = 15.3 × (maxHR / restingHR) is convenient but the least precise of the three methods. It is best used as a rough starting estimate when you do not have recent race data.

VO2 Max vs VDOT

VO2 max is a physiological measurement of oxygen consumption, while VDOT is Jack Daniels' "pseudo-VO2 max" — a performance-based number that also accounts for running economy. Two runners with the same lab VO2 max can have different VDOT scores if one runs more efficiently. For setting training paces, VDOT is often more practical; for assessing overall cardiovascular fitness, VO2 max is the standard metric.