VO2 Max Calculator (1.5 Mile Run, Walk & Cooper Test)
Estimate VO2max from three validated field tests: the 1.5-mile run, the Cooper 12-minute run and the Rockport 1-mile walk - with their published equations, plus age-based reference ranges.
Results
- Estimated VO2max
- 42.4 ml/kg/min
- Cooper 12-minute run
- Category (male, 25)
- Above Avg
- ACSM / Cooper Institute normative table
VO2max norms - men, age 20-29 (ACSM 11th ed., Table 4.7)
| Category | ml/kg/min | |
|---|---|---|
| Poor | < 33 | |
| Below Avg | 33-36 | |
| Average | 36-41 | |
| Above Avg | 41-45 | Your category |
| Good | 45-52 | |
| Excellent | 52-59 | |
| Superior | 59.1-Infinity+ |
How it works & limitations
Which test to choose
Cooper and 1.5-mile runs require a maximal effort and suit trained individuals. The Rockport walk is submaximal, making it safer for less fit or older people. The resting-HR (Uth) method needs no exercise: VO2max ~ 15.3 x (HRmax / HRrest), and is a quick screening estimate rather than a field-test-grade number. Field tests typically carry an error of roughly 3-5 ml/kg/min.
VO2max and jumping
VO2max is a health and recovery metric more than a jump predictor - explosive power depends on the neuromuscular system. But a solid aerobic base speeds recovery between jump sessions and supports the work capacity to train more often. Use the category as a health check and trend tracker, not a jump-performance score.
Protocol notes
Warm up, run or walk on a flat measured course (a track is ideal), and record time or distance accurately. For the Rockport test, measure heart rate immediately at the finish. Repeat under similar conditions to track change.
Sources
Last updated 2026-08-13
- Cooper, K. H. (1968). A means of assessing maximal oxygen intake. JAMA, 203(3), 201-204.
- Kline, G. M., et al. (1987). Estimation of VO2max from a one-mile track walk, gender, age, and body weight. Medicine & Science in Sports & Exercise, 19(3), 253-259.
- Uth, N., Sorensen, H., Overgaard, K., & Pedersen, P. K. (2004). Estimation of VO2max from the ratio between HRmax and HRrest - the Heart Rate Ratio Method. European Journal of Applied Physiology, 91(1), 111-115.
- American College of Sports Medicine (2021). ACSM's Guidelines for Exercise Testing and Prescription (11th ed.), Table 4.7 - normative values from the Cooper Institute Aerobics Center Longitudinal Study.
Field-test estimates are not clinical VO2max measurements. Stop immediately if you feel chest pain, dizziness or unusual shortness of breath during testing.
Frequently asked questions
Which field test is most accurate?
The Cooper 12-minute run and 1.5-mile run require maximal effort and are best for trained people. The Rockport 1-mile walk is submaximal and suitable for less fit or older individuals. All three are estimates with a typical error of about 3-5 ml/kg/min.
What is a good VO2max?
Values depend on age and sex. As a rough guide, a VO2max above 40 ml/kg/min is reasonable for active adults, with endurance athletes often exceeding 50-60. Compare against age- and sex-specific norms rather than a single number.