Cardio calculator
Cardio fitness score calculator
Rate a VO₂ max estimate against age and sex standards, then see how far you are from the next cardio fitness band.
Age band 30-39 · 40th percentile or higher
Fair
Current VO₂ max
42
Next band
+2
Good starts at 44
Save this score — test again in four weeks and see the trend.
Free — no card, 30 seconds. Your result comes with you.
What is a cardio fitness score?
VO₂ max naturally varies by age and sex, so the raw number is easier to use when it is converted into a rating band. The useful question is not just the score today, but what training would move it one band higher.