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VO₂ Max Calculator

Estimate VO₂ max from resting and maximum heart rate — a 30-second screening estimate, not a clinical measurement.

Priya Venkatesan By Priya Venkatesan
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

bpm
bpm

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Uhthoff-Uth formula: VO₂max ≈ 15.3 × HRmax / HRrest, in mL/kg/min.

In depth

Estimate VO₂ max from resting and maximum heart rate — a 30-second screening estimate, not a clinical measurement.