VO2 Max Calculator
Estimate VO2 max from either a Cooper 12-minute run or a 1.5-mile run. Enter the result in familiar units and get the field-test estimate plus average pace right away.
How It Works
Formula
Variables, symbols and units
- Distance completed in 12 minutes after converting the entry to meters(m)
- 1.5-mile finish time converted to total minutes(minutes)
- Estimated VO2 max from the chosen field test(mL/kg/min)
Calculation method explained
Choose the field test first. For the Cooper 12-minute run, the calculator converts your entered distance to meters and applies the Cooper equation. For the 1.5-mile run, it converts your finish time into total minutes and applies the 1.5-mile equation. The secondary pace is derived from the same test result and shown as /km or /mi to match your reading context.
This calculator keeps the two field tests separate:
- Cooper 12-minute run: convert the entered distance from
m,km, ormiinto meters, then apply . - 1.5-mile run: parse the finish time as total seconds, convert it to total minutes, then apply .
- Average pace is a derived output from the same test result. For the Cooper test, pace is 12 minutes divided by the distance covered. For the 1.5-mile test, pace is finish time divided by 1.5 miles. The result is displayed as
/kmor/mito match the active unit system.
Frequently Asked Questions
What does this calculator estimate?
It estimates VO2 max from a running field test, not from a lab mask test. That makes it useful for personal benchmarking and repeat comparisons under similar conditions, but it is still an estimate rather than a direct physiological measurement.
Why are there two formulas?
The Cooper test is based on the distance you cover in exactly 12 minutes, so its formula uses distance in meters. The 1.5-mile test is based on how long you take to cover a fixed distance, so its formula uses total time in minutes. Each formula matches the structure of its own test.
Why does the pace unit change but the VO2 max does not?
VO2 max is calculated from the normalized test variables: meters for the Cooper test and total minutes for the 1.5-mile test. Pace is just a companion reading shown in the unit you usually train with, so the pace display can change between /km and /mi without changing the VO2 max estimate itself.
How should I use the result?
Use it as a repeatable benchmark. If you retest on a similar route, surface, weather, and fatigue level, changes in the estimate can help you judge whether your aerobic fitness is moving. It is not a diagnosis, athlete ranking, or training plan by itself.