VO2max is the maximum rate of oxygen consumption during incremental exercise. It is measured in ml of oxygen per kilogram of body weight per minute (ml/kg/min). It is considered the best indicator of cardiorespiratory fitness.

Which test method is most accurate?

A laboratory treadmill test is most accurate. Of field tests, the Cooper test (12-minute run) and race time methods are most reliable for runners. The Rockport walk test is better for beginners or those unable to run maximally.

What is a good VO2max?

Average for sedentary adults: 30-40 ml/kg/min. Good club runners: 45-55. Elite runners: 65-75. World-class: 80+ (men) or 70+ (women). VO2max declines with age but improves significantly with training.

Can I improve my VO2max?

Yes, by 10-20% with consistent training. High-intensity interval training (HIIT) and tempo runs are the most effective. Improvements plateau after 6-12 months of training. Genetics set the upper limit.

How does altitude affect VO2max?

VO2max decreases approximately 3% per 1000m above sea level due to lower oxygen pressure. Use the altitude correction in Advanced Options if you tested at altitude to get your sea-level equivalent.

RunCalcs

VO2max Estimator — Estimate VO2max from Test Results

Estimate your VO2max from Cooper test, Rockport walk, 1-mile run or race time.

Estimation Method

Enter the estimation method

Test Result

Distance run in 12 minutes (metres)

Age

Your age in years

Gender

Enter the gender

Weight

Weight measurement

How We Calculate This

Estimation Methods

Cooper Test: Run as far as possible in 12 minutes. VO2max = (distance - 504.9) / 44.73
Rockport Walk: Walk 1 mile as fast as possible. Uses time, weight, age and gender.
1-Mile Run: Run 1 mile at maximum effort. Uses velocity-based estimation.
Race Time: Uses your 5K race time with the Daniels VDOT method.

Frequently Asked Questions

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Estimate lactate threshold pace and heart rate from recent race results with training zones.

Last updated: February 2026

All calculations are estimates. Always consult a coach or medical professional for personalised training advice.