Alex, weekend session
Typical mid-range inputs
A clear time or load to try this week.
VO2 Max Estimate
Estimate VO2 max from max and resting heart rate using the Uth method.
Your details
Resting heart rate after sitting quietly.
What is this calculator?
Estimate VO2 max from max and resting heart rate using the Uth method.
How it works
- Enter the numbers you know.
- We apply a standard sports formula.
- Use the result as a plan, then adjust to how you feel.
Common questions
What is the vo2 max estimate?
A simple heart-rate estimate of VO2 max. Not a lab test. It is a planning estimate, not a coaching prescription.
Do I need a gadget?
A phone clock or bike computer is enough. Fancy kit is optional.
Can beginners use it?
Yes. Start easier than the number if you are new or returning.
Example scenarios
Morgan, first month back
Conservative inputs
A gentler target that is easier to repeat.
Chris, event build
Slightly faster or heavier inputs
A stretch figure to test, not to force.
Understanding your results
If the number feels too spicy, drop it by 10 percent and keep the habit. Consistency beats a heroic Tuesday.
About this result
Guidance only. Calculations run in your browser. Numbers are estimates, not a diagnosis.
How we calculate
15.3 × (max HR ÷ resting HR), the Uth. Sørensen estimate.
Sources
Method described on this page. We link NHS or GOV.UK guidance where it applies.
Limitations
- Illustration only.
- Build training gradually.
- Stop if you feel chest pain, severe dizziness or sharp pain.
When to seek help
Seek urgent help for chest pain, collapse or sudden shortness of breath.
Spotted an error? Request a correction or read our editorial policy.