VO₂ Max (maximal oxygen uptake) is a measure of cardiovascular fitness and aerobic endurance. It reflects the maximum amount of oxygen your body can utilize during intense exercise.

This calculator estimates VO₂ Max using two common field tests:

1. Rockport Walk Test (1-Mile Walk):

• Procedure: Walk one mile (1.6 km) as fast as possible on a flat, measured track. Immediately record your time and heart rate (beats per minute).
• Formula: VO₂ Max = 132.853 – (0.0769 × Weight_lbs) – (0.3877 × Age) + (6.315 × Gender) – (3.2649 × Time_minutes) – (0.1565 × Heart Rate_bpm)
• Gender: Male=1, Female=0. Time in decimal minutes (e.g., 15 min 30 sec = 15.5 min).

2. Cooper Run Test (12-Minute Run/Walk):

• Procedure: Cover as much distance as possible by running or walking in 12 minutes on a flat, measured track.
• Formula: VO₂ Max = (Distance_meters – 504.9) / 44.73

Fitness Categories (General): VO₂ Max values are often compared against age and gender-specific norms. This calculator provides a general category. For detailed percentiles, consult fitness assessment resources.

Disclaimer: These tests provide ESTIMATES. Laboratory testing is the most accurate way to measure VO₂ Max. Consult a healthcare professional before performing these tests or starting any new exercise program, especially if you have health concerns.