Free calculator
VO2 Max Calculator
Estimate VO2 max using a simple 12-minute run/walk test distance.
What VO2 max means
VO2 max is an estimate of aerobic capacity. Higher numbers generally reflect stronger cardiorespiratory fitness, but the exact value depends on testing method and effort.
A field-test calculator is useful for tracking change over time if the test conditions are similar. It is not the same as a lab test.
How to improve it
Consistent easy cardio, progressive intervals, appropriate recovery and gradual volume increases usually matter more than obsessing over the score itself.
Related tools and guides
VO2 Max Calculator FAQs
Is this medical advice?
No. This is general information only.
How should I use the result?
Use it as a starting point and adjust based on real results and qualified advice where needed.
Why do calculator results differ?
Different formulas use different assumptions. Real-world tracking matters more than one estimate.