Oxygen Consumption Calculator

Oxygen consumption (VO2) measures how much oxygen your body uses during physical activity. It's a key indicator of cardiovascular fitness, metabolic efficiency, and exercise capacity. Higher VO2 values indicate better aerobic fitness.

Absolute VO2 is measured in liters per minute (L/min) and represents total oxygen consumption. Relative VO2 is measured per kilogram of body weight (mL/kg/min) and allows for better comparison between individuals of different sizes.

This calculator provides estimates based on established physiological formulas using heart rate, body weight, and activity level. For precise measurements, laboratory testing with specialized equipment is required.

Sedentary adults typically have VO2 values of 15-25 mL/kg/min, recreational athletes 25-40 mL/kg/min, and elite endurance athletes can exceed 70 mL/kg/min. Values vary by age, gender, and fitness level.

METs (Metabolic Equivalents) represent multiples of resting metabolic rate. 1 MET equals approximately 3.5 mL/kg/min of oxygen consumption. Light activities are 2-3 METs, moderate activities 3-6 METs, and vigorous activities exceed 6 METs.

Yes, regular measurements can help track cardiovascular fitness improvements over time. However, use consistent testing conditions (same activity type, effort level) for meaningful comparisons.

Key factors include body weight, age, gender, fitness level, exercise intensity, altitude, temperature, and overall health status. Trained athletes typically have more efficient oxygen utilization.

Heart rate and oxygen consumption have a linear relationship during steady-state exercise. As exercise intensity increases, both heart rate and VO2 increase proportionally, making heart rate a useful predictor of oxygen consumption.