VO2 Max Calculator
Free VO2 max calculator. Estimate your cardio fitness with the 1-mile Rockport walk test or the 12-minute Cooper run test. Get your VO2 max and a fitness rating.
About the VO2 Max Calculator
Estimate VO2 max from measurements of a Rockport one-mile walk or Cooper 12-minute run. Enter the measurements for your selected test to calculate an estimate in ml/kg/min. The displayed rating uses fixed thresholds rather than age- and sex-specific norms, and is not a laboratory measurement.
Features
- Rockport 1-mile walk test
- Cooper 12-minute run test
- VO2 max in ml/kg/min
- General adult fitness rating
- 100% client-side and private — instant results, no signup
How to use this tool
The VO2 Max Calculator works right in your browser — no signup, no installation. Follow these steps:
- Pick a test: 1-mile walk or 12-min run.
- Enter the measurements for that test.
- Read your estimated VO2 max.
- Compare against the fitness rating.
Frequently asked questions
What does the result represent?
A formula estimate of oxygen uptake from the field-test measurements you enter. It is not a direct measurement of oxygen consumption.
Which inputs are used?
The walk equation uses weight, age, sex, walk duration and ending heart rate. The run equation uses distance covered in 12 minutes.
How is the rating assigned?
The tool applies fixed numeric bands to the estimate. The bands are not adjusted for age or sex and should not be treated as an individual health assessment.
Using the results
The VO2 Max Calculator calculates an estimate from the measurements you enter. Read the formula and limitations alongside the result; an estimate is not a diagnosis.