Cooper Test Calculator (12-Minute Run)
The Cooper test, devised by Dr. Kenneth Cooper for the U.S. military in 1968, measures how far you can run in 12 minutes. The distance estimates your VO₂max — and this calculator turns it into your aerobic-fitness percentile for your age and sex.
How to do the Cooper test
Warm up, then run as far as you can in exactly 12 minutes on a track or flat course. VO₂max = (meters − 504.9) ÷ 44.73.
Cooper test distance by age (meters to reach each percentile)
| Age | 5th | 10th | 25th | 50th | 75th | 90th | 95th |
|---|---|---|---|---|---|---|---|
| 20–29 | 1800 | 1940 | 2300 | 2650 | 2970 | 3270 | 3470 |
| 30–39 | 1720 | 1860 | 2110 | 2400 | 2710 | 3030 | 3180 |
| 40–49 | 1590 | 1700 | 1930 | 2200 | 2520 | 2840 | 2990 |
| 50–59 | 1440 | 1520 | 1720 | 1960 | 2280 | 2540 | 2770 |
| 60–69 | 1280 | 1390 | 1570 | 1770 | 2050 | 2310 | 2430 |
| 70–79 | 1230 | 1270 | 1420 | 1600 | 1860 | 2140 | 2280 |
| Age | 5th | 10th | 25th | 50th | 75th | 90th | 95th |
|---|---|---|---|---|---|---|---|
| 20–29 | 1480 | 1570 | 1870 | 2190 | 2500 | 2800 | 3010 |
| 30–39 | 1350 | 1440 | 1640 | 1860 | 2120 | 2360 | 2550 |
| 40–49 | 1270 | 1350 | 1490 | 1700 | 1950 | 2220 | 2370 |
| 50–59 | 1220 | 1280 | 1400 | 1550 | 1740 | 1940 | 2110 |
| 60–69 | 1100 | 1160 | 1270 | 1400 | 1570 | 1710 | 1820 |
| 70–79 | 1090 | 1110 | 1200 | 1320 | 1440 | 1540 | 1580 |
Verified source: VO₂max reference percentiles by age & sex — Kaminsky LA, Arena R, Myers J — Mayo Clinic Proceedings, FRIEND Registry, "Reference Standards for Cardiorespiratory Fitness…" 90(11):1515–1523, Table 3 (2015 (measured treadmill CPX)). Reproduced verbatim and checked cell-by-cell. Every percentile cell reproduced verbatim from Table 3 ("Men/Women from FRIEND") and verified against the primary publication. The field-test estimation equations are public-domain published formulas (Cooper, Kline, McArdle, Uth, ACSM). Official source · Sources & methodology
Frequently asked questions
How does the Cooper 12-minute run test work?
Warm up, then run as far as you can in exactly 12 minutes on a track or flat measured course, pacing for a hard but even effort. Record the distance. Cooper's equation converts it to an estimated VO₂max: VO₂max = (meters − 504.9) ÷ 44.73.
What is a good Cooper test result?
It depends on age and sex. As a rough guide for a man in his 20s, about 2,400 m (1.5 miles) is around average and 2,800 m is excellent; for a woman in her 20s, about 2,100 m is around average. Use the calculator for your exact age — the standards table below shows the distance for each percentile.
How accurate is the Cooper test?
It's a solid field estimate but depends on pacing and a true maximal effort, and the VO₂max equation carries a few ml/kg/min of error. It's best for tracking your own progress and comparing to population norms — not as an exact lab value.
Cooper test vs the 1.5-mile or 2-mile run?
They measure the same thing — aerobic capacity — just with a fixed time (Cooper, 12 min) versus a fixed distance (1.5 or 2 miles). Military branches mostly use a fixed-distance run; see our Air Force, Army, Navy, and Marine calculators for those scored standards.