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Cooper Test Calculator — VO2max and fitness rating

The Cooper test involves running as far as possible in exactly 12 minutes. Based on the distance covered, this calculator estimates your maximal oxygen uptake (VO2max) and rates your aerobic fitness against norms for your sex and age group. It is a quick, practical way to assess cardiovascular endurance.

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How we calculate VO2max

Cooper formula: VO2max = (distance in metres − 504.9) ÷ 44.73. Result in ml O₂/kg/min. Category is determined using Cooper Institute age-group norms, separately for males and females, in groups 13–19, 20–29, 30–39, 40–49, 50–59 and 60+.

Example calculation

Male, age 30, distance 2400 m. VO2max = (2400 − 504.9) ÷ 44.73 ≈ 42.4 ml/kg/min. Norm for men aged 30–39: good = 40.5–44.4. Rating: Good. Female, age 25, 1900 m: VO2max ≈ 31.2 — Fair.

Frequently asked questions

What is the Cooper test?

The Cooper test is a fitness trial in which you run as far as possible in exactly 12 minutes. Developed in 1968 by Dr Kenneth H. Cooper, it provides a simple estimate of aerobic fitness (VO2max).

How is VO2max calculated from the Cooper test?

VO2max (ml/kg/min) = (distance in metres − 504.9) ÷ 44.73. This is an approximation; laboratory measurement requires respiratory gas analysis.

What are good VO2max norms for men?

Men aged 20–29: Very poor <33.0, Poor 33.0–36.4, Fair 36.5–42.4, Good 42.5–46.4, Excellent 46.5–52.4, Superior ≥52.5 ml/kg/min. Values decrease about 5–6 units per decade.

Women aged 20–29: Very poor <23.6, Poor 23.6–27.9, Fair 28.0–31.5, Good 31.6–35.6, Excellent 35.7–39.9, Superior ≥40.0 ml/kg/min. Women typically score 10–20% lower than men of the same age.

Avoid hard training 24–48 h before. Do not eat a heavy meal 2–3 h before. Warm up for 10–15 minutes. Choose a flat, firm surface. Stay well-hydrated. Do not run when ill or in extreme weather.

Run at an even pace throughout. Starting too fast leads to exhaustion mid-test and a worse result. Beginners: 5:30–6:30 min/km; experienced runners: 4:30–5:00 min/km. For the first 2 minutes run slightly below your intended average.

It is safe for healthy active people. Not recommended for those with heart or circulatory conditions, musculoskeletal injuries, people over 45 without prior medical clearance, or pregnant women.

Interval training (HIIT 2–3 times a week), long easy runs for aerobic base building, and threshold runs at lactate threshold pace. With consistent training (3+ runs per week) VO2max typically improves 15–20% over 3–6 months.

Approximate "Good" distances: men 20–29 ≥2400 m; men 30–39 ≥2300 m; men 40–49 ≥2100 m; women 20–29 ≥1900 m; women 30–39 ≥1850 m; women 40–49 ≥1700 m.

Every 6–8 weeks is ideal for tracking training progress. Testing more frequently (e.g. fortnightly) is unreliable due to daily fluctuations in form. Record the date, weather conditions, distance and how you felt.

The result is indicative and is not a medical assessment. Consult a doctor before running the test, especially if you have cardiovascular conditions or have been inactive for an extended period.