VO2 Max Calculator
Estimate your VO2 max from a 12-minute run (Cooper test), a 1-mile walk (Rockport test) or your heart rates, and see how it compares for your age and sex.
Results
| Item | Value |
|---|
Quick Answer
VO2 max is the most oxygen your body can use during hard exercise, in mL per kg of body weight per minute. With the Cooper test, VO2 max ≈ (meters run in 12 minutes − 504.9) ÷ 44.73. Running 2,400 m gives about 42.4 mL/kg/min.
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Table of Contents
- VO2 Max Calculator
- Quick Answer
- Related Calculators
- How This VO2 Max Calculator Works
- How to Use the VO2 Max Calculator
- Core Formulas
- Key Terms
- Worked Example
- Real-Life Examples
- VO2 Max vs Resting Heart Rate
- VO2 Max Percentiles (Treadmill)
- Common Mistakes to Avoid
- Frequently Asked Questions
- References & Sources
How This VO2 Max Calculator Works
Choose a test. For the Cooper test, run as far as you can in 12 minutes and enter the distance. For the Rockport test, walk 1 mile as fast as you can and enter your time, weight and heart rate at the end. For the heart rate ratio method, enter your maximum and resting heart rates. The calculator estimates your VO2 max and compares it with others of your age and sex.
Quick explanation: a higher VO2 max means better aerobic fitness.
- Cooper test: best for people who can run hard for 12 minutes.
- Rockport test: a walking test, good for beginners.
- Heart rate ratio: no exercise test needed, but less precise.
How to Use the VO2 Max Calculator
- Choose the Cooper run, Rockport walk or heart rate ratio test.
- Choose your sex and enter your age.
- Enter the test results, such as distance, walk time or heart rates.
- Press Calculate.
- Read your estimated VO2 max and how it compares.
Core Formulas
- Cooper: VO2 max = (distance in meters − 504.9) ÷ 44.73
- Rockport: 132.853 − 0.0769 × weight (lb) − 0.3877 × age − 3.2649 × time (min) − 0.1565 × heart rate + 6.315 (men)
- Heart rate ratio (Uth): 15.3 × maximum heart rate ÷ resting heart rate
Key Terms
- VO2 max: the maximum rate of oxygen use during exercise, in mL/kg/min.
- Cooper test: a 12-minute run for maximum distance.
- Rockport test: a timed 1-mile walk with heart rate at the end.
- Resting heart rate: heart beats per minute at complete rest.
- Percentile: the share of people with a lower value.
Worked Example
A 40-year-old man weighing 180 lb walks a mile in 15 minutes, finishing with a heart rate of 140.
- 132.853 − 0.0769 × 180 − 0.3877 × 40 − 3.2649 × 15 − 0.1565 × 140 + 6.315
- = 38.9 mL/kg/min
- The median for men in their 40s is 35.3, so this is above the median
Real-Life Examples
- A runner: 2,800 m in 12 minutes gives about 51.3 mL/kg/min.
- A beginner: the Rockport walk example above gives about 38.9.
- No test: a maximum heart rate of 185 and resting rate of 60 gives about 47.2 with the Uth method.
- Tracking training: repeat the same test every few months to see progress.
VO2 Max vs Resting Heart Rate
- VO2 max: how much oxygen you can use at peak effort.
- Resting heart rate: beats per minute at rest. A lower rate often means better fitness.
- Together: the Uth method uses both heart rates to estimate VO2 max.
VO2 Max Percentiles (Treadmill)
Source: Wikipedia, VO2 max (data from a large US fitness registry).
| Age | Men 50th | Men 90th | Women 50th | Women 90th |
|---|---|---|---|---|
| 20s | 46.5 | 58.6 | 36.6 | 49.0 |
| 30s | 39.7 | 55.5 | 28.3 | 42.1 |
| 40s | 35.3 | 50.8 | 25.7 | 37.8 |
| 50s | 29.2 | 43.4 | 22.9 | 32.4 |
| 60s | 24.6 | 37.1 | 19.6 | 27.3 |
| 70s | 20.6 | 29.4 | 17.2 | 22.8 |
Common Mistakes to Avoid
- Not running all-out. Field tests need maximum effort to be accurate.
- Guessing your max heart rate. Age formulas can be off by 10 bpm or more.
- Measuring the wrong distance. Use a 400 m track or a GPS watch.
- Testing when tired or ill. Rest well before a test.
- Comparing different tests. Track progress with the same test each time.
Frequently Asked Questions
It depends on age and sex. For men in their 40s the median is about 35, and for women in their 40s about 26, on treadmill tests.
VO2 max = (meters run − 504.9) ÷ 44.73.
They are estimates. Lab tests that measure breathing gases are the most accurate.
Yes. Regular aerobic exercise, especially intervals, can raise it.
Yes. The percentile table shows it falling with each decade.
Milliliters of oxygen per kilogram of body weight per minute (mL/kg/min).
Use the Cooper test if you can run hard for 12 minutes. Use the Rockport walk if you are new to exercise.
A max-effort test gives the best number. Age-based formulas only estimate it.
On average, men have more hemoglobin and muscle mass, though training matters a lot.
Yes. VO2 max is per kilogram, so losing fat can raise it.
Higher aerobic fitness is linked with lower risk of many diseases.
No. Talk to a doctor before hard exercise if you have health problems.
Warm up for 10 minutes, then run as far as you can in exactly 12 minutes, ideally on a 400 m track so you can count laps. Note the distance to the nearest 50 m and enter it here.
Walk one mile on a flat surface as fast as you can without jogging. Check your heart rate right at the finish, using a monitor or by counting your pulse for 15 seconds and multiplying by 4.
References & Sources
| Source | Used For | Link |
|---|---|---|
| Wikipedia, VO2 max | Cooper, Rockport and Uth formulas, and percentile tables. | https://en.wikipedia.org/wiki/VO2_max |
| Uth N, et al. (2004), Estimation of VO2max from the ratio between HRmax and HRrest | The heart rate ratio method. | https://pubmed.ncbi.nlm.nih.gov/14624296/ |